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Auerbach DJ, Tully JC, Wodtke AM. Chemical dynamics from the gas‐phase to surfaces. ACTA ACUST UNITED AC 2021. [DOI: 10.1002/ntls.10005] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Daniel J. Auerbach
- Institut für physikalische Chemie Georg‐August Universität Göttingen Göttingen Germany
- Abteilung für Dynamik an Oberflächen Max‐Planck‐Institut für biophysikalische Chemie Göttingen Germany
| | - John C. Tully
- Department of Chemistry Yale University New Haven Connecticut USA
| | - Alec M. Wodtke
- Institut für physikalische Chemie Georg‐August Universität Göttingen Göttingen Germany
- Abteilung für Dynamik an Oberflächen Max‐Planck‐Institut für biophysikalische Chemie Göttingen Germany
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2
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Tek G, Hamm P. Transient CO desorption from thin Pt films induced by mid-IR pumping. J Chem Phys 2021; 154:084706. [PMID: 33639777 DOI: 10.1063/5.0041216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Resonant and off-resonant mid-infrared pump-probe spectroscopy is used to measure the vibrational dynamics of CO adsorbed to thin (0.2 nm, 2 nm, and 10 nm) heterogeneous Pt layers in an aqueous solution. The transient signals observed with resonant pumping are dominated by vibrational relaxation of the CO internal stretch vibration with a lifetime of T1 ∼ 3 ps in all cases. Off-resonant pumping suppresses that contribution to the signal and singles out a signal, which is attributed to heating of the metal layer as well as transient desorption of the CO molecules. Due to the small photon energy (0.2 eV) used as pump pulses, the mechanism of desorption must be thermal, in which case the desorption yield depends exclusively on the fluence of absorbed light and not its wavelength. The thin Pt layers facilitate CO desorption, despite a relatively low pump pulse fluence, as they concentrate the absorbed energy in a small volume.
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Affiliation(s)
- Gökçen Tek
- Department of Chemistry, University of Zurich, Zurich, Switzerland
| | - Peter Hamm
- Department of Chemistry, University of Zurich, Zurich, Switzerland
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3
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Roiaz M, Falivene L, Rameshan C, Cavallo L, Kozlov SM, Rupprechter G. Roughening of Copper (100) at Elevated CO Pressure: Cu Adatom and Cluster Formation Enable CO Dissociation. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2019; 123:8112-8121. [PMID: 30976376 PMCID: PMC6453259 DOI: 10.1021/acs.jpcc.8b07668] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 10/11/2018] [Indexed: 05/16/2023]
Abstract
Carbon monoxide participates in many copper-catalyzed reactions, which makes CO-induced structural changes of Cu catalysts key for important industrial processes. We have studied the interaction of carbon monoxide with the Cu(100) single crystal termination at 120, 200, and 300 K by means of low-energy electron diffraction (LEED), temperature-programmed desorption (TPD), X-ray photoelectron spectroscopy (XPS), polarization-modulation infrared reflection absorption spectroscopy (PM-IRAS), and density functional theory (DFT) calculations. The absorption band of CO (2082-2112 cm-1) at elevated gas pressure (up to 5 mbar) and at 200/300 K was found at a higher wavenumber than the characteristic band of the c(2 × 2)CO structure and was consistent with CO adsorbed on low-coordinated Cu atoms. The combined PM-IRAS/DFT analysis revealed that exposure to CO induced surface roughening through the formation of Cu adatoms and clusters on the (100) terraces. The roughened surface seemed surprisingly active for CO dissociation, which indicates its unique catalytic properties.
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Affiliation(s)
- Matteo Roiaz
- Institute
of Materials Chemistry, Technische Universität
Wien, 1060 Vienna, Austria
| | - Laura Falivene
- KAUST
Catalysis Center, Kind Abdullah University
of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Christoph Rameshan
- Institute
of Materials Chemistry, Technische Universität
Wien, 1060 Vienna, Austria
| | - Luigi Cavallo
- KAUST
Catalysis Center, Kind Abdullah University
of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Sergey M. Kozlov
- KAUST
Catalysis Center, Kind Abdullah University
of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Günther Rupprechter
- Institute
of Materials Chemistry, Technische Universität
Wien, 1060 Vienna, Austria
- E-mail:
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4
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Lončarić I, Alducin M, Juaristi JI, Novko D. CO Stretch Vibration Lives Long on Au(111). J Phys Chem Lett 2019; 10:1043-1047. [PMID: 30776894 DOI: 10.1021/acs.jpclett.9b00069] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Measured lifetimes of the CO internal stretch mode on various metal surfaces routinely lie in the picosecond regime. These short vibrational lifetimes, which are actually reproduced by current first-principles nonadiabatic calculations, are attributed to the rapid vibrational energy loss that is caused by the facile excitation of electron-hole pairs in metals. However, this explanation was recently questioned by the huge discrepancy that exists for CO on Au(111) between the experimental vibrational lifetime that is larger than 100 ps and the previous theoretical predictions of 4.8 and 1.6 ps. Here, we show that the state-of-the-art nonadiabatic theory does reproduce the long CO lifetime measured in Au(111) provided the molecule-surface interaction is properly described. Importantly, our new results confirm that the current understanding of the adsorbates' vibrational relaxation at metal surfaces is indeed valid.
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Affiliation(s)
- Ivor Lončarić
- Ruđer Bošković Institute , Bijenička 54 , HR-10000 Zagreb , Croatia
- Donostia International Physics Center DIPC , P. Manuel de Lardizabal 4 , 20018 Donostia-San Sebastián , Spain
| | - M Alducin
- Donostia International Physics Center DIPC , P. Manuel de Lardizabal 4 , 20018 Donostia-San Sebastián , Spain
- Centro de Física de Materiales CFM/MPC (CSIC-UPV/EHU) , P. Manuel de Lardizabal 5 , 20018 Donostia-San Sebastián , Spain
| | - J I Juaristi
- Donostia International Physics Center DIPC , P. Manuel de Lardizabal 4 , 20018 Donostia-San Sebastián , Spain
- Centro de Física de Materiales CFM/MPC (CSIC-UPV/EHU) , P. Manuel de Lardizabal 5 , 20018 Donostia-San Sebastián , Spain
- Departamento de Física de Materiales, Facultad de Químicas , Universidad del País Vasco (UPV/EHU) , Apartado 1072 , 20080 Donostia-San Sebastián , Spain
| | - D Novko
- Donostia International Physics Center DIPC , P. Manuel de Lardizabal 4 , 20018 Donostia-San Sebastián , Spain
- Center of Excellence for Advanced Materials and Sensing Devices , Institute of Physics , Bijenička 46 , 10000 Zagreb , Croatia
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5
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Ultrafast Vibrational Dynamics of CO Ligands on RuTPP/Cu(110) under Photodesorption Conditions. SURFACES 2019. [DOI: 10.3390/surfaces2010010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We have studied CO coordinated to ruthenium tetraphenylporphyrin (RuTPP)/Cu(110) and directly adsorbed to Cu(110), using femtosecond pump-sum frequency probe spectroscopy, to alter the degree of electron-vibration coupling between the metal substrate and CO. We observe the facile femtosecond laser-induced desorption of CO from RuTPP/Cu(110), but not from Cu(110). A change in the vibrational transients, in the first few picoseconds, from a red- to blue-shift of the C–O stretching vibration under photodesorption conditions, was also observed. This drastic change can be explained, if the cause of the C–O frequency redshift of Cu(110) is not the usually-assumed anharmonic coupling to low frequency vibrational modes, but a charge transfer from hot electrons to the CO 2π* state. This antibonding state shifts to higher energies on RuTPP, removing the C–O redshift and, instead, reveals a blueshift, predicted to arise from electron-mediated coupling between the coherently excited internal stretch and low frequency modes in the system.
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6
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Novko D, Tremblay JC, Alducin M, Juaristi JI. Ultrafast Transient Dynamics of Adsorbates on Surfaces Deciphered: The Case of CO on Cu(100). PHYSICAL REVIEW LETTERS 2019; 122:016806. [PMID: 31012646 DOI: 10.1103/physrevlett.122.016806] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Indexed: 06/09/2023]
Abstract
Time-resolved vibrational spectroscopy constitutes an invaluable experimental tool for monitoring hot-carrier-induced surface reactions. However, the absence of a full understanding of the precise microscopic mechanisms causing the transient spectral changes has limited its applicability. Here we introduce a robust first-principles theoretical framework that successfully explains both the nonthermal frequency and linewidth changes of the CO internal stretch mode on Cu(100) induced by femtosecond laser pulses. Two distinct processes engender the changes: electron-hole pair excitations underlie the nonthermal frequency shifts, while electron-mediated vibrational mode coupling gives rise to linewidth changes. Furthermore, the origin and precise sequence of coupling events are finally identified.
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Affiliation(s)
- D Novko
- Center of Excellence for Advanced Materials and Sensing Devices, Institute of Physics, Bijenička 46, 10000 Zagreb, Croatia
- Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain
| | - J C Tremblay
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin, Germany
| | - M Alducin
- Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain
- Centro de Física de Materiales (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
| | - J I Juaristi
- Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain
- Centro de Física de Materiales (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
- Departamento de Física de Materiales, Facultad de Químicas UPV/EHU, Apartado 1072, 20080 Donostia-San Sebastián, Spain
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7
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Novko D, Alducin M, Juaristi JI. Electron-Mediated Phonon-Phonon Coupling Drives the Vibrational Relaxation of CO on Cu(100). PHYSICAL REVIEW LETTERS 2018; 120:156804. [PMID: 29756898 DOI: 10.1103/physrevlett.120.156804] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Indexed: 06/08/2023]
Abstract
We bring forth a consistent theory for the electron-mediated vibrational intermode coupling that clarifies the microscopic mechanism behind the vibrational relaxation of adsorbates on metal surfaces. Our analysis points out the inability of state-of-the-art nonadiabatic theories to quantitatively reproduce the experimental linewidth of the CO internal stretch mode on Cu(100) and it emphasizes the crucial role of the electron-mediated phonon-phonon coupling in this regard. The results demonstrate a strong electron-mediated coupling between the internal stretch and low-energy CO modes, but also a significant role of surface motion. Our nonadiabatic theory is also able to explain the temperature dependence of the internal stretch phonon linewidth, thus far considered a sign of the direct anharmonic coupling.
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Affiliation(s)
- D Novko
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
- Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain
| | - M Alducin
- Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain
- Centro de Física de Materiales CFM/MPC (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
| | - J I Juaristi
- Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastián, Spain
- Centro de Física de Materiales CFM/MPC (CSIC-UPV/EHU), Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastián, Spain
- Departamento de Física de Materiales, Facultad de Químicas UPV/EHU, Apartado 1072, 20080 Donostia-San Sebastián, Spain
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8
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Kokalj A, Makino T, Okada M. DFT and TPD study of the role of steps in the adsorption of CO on copper: Cu(4 1 0) versus Cu(1 0 0). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2017; 29:194001. [PMID: 28291017 DOI: 10.1088/1361-648x/aa66a3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Adsorption of carbon monoxide (CO) was studied on stepped Cu(4 1 0) by temperature programmed desorption (TPD) and density-functional-theory (DFT) calculations. For comparison, the adsorption of CO was characterized also on Cu(1 0 0) by DFT calculations. On Cu(4 1 0) TPD reveals two desorption peaks: a high temperature peak (∼210 K) is attributed to the desorption of CO from step-edge sites and low temperature peak (∼170 K) to desorption from terrace sites. According to DFT calculations, CO prefers to adsorb at step-edges of Cu(4 1 0), although the step-edge versus terrace site preference is rather small at low coverage of 1/16 ML, about 0.05 eV; the respective DFT predicted CO binding energies are -0.89 and -0.84 eV at the step-edge and terrace top sites, whereas the value calculated at top sites of Cu(1 0 0) is -0.86 eV. Although this small step-edge over terrace site preference of 0.05 eV cannot explain the temperature difference of 40 K between the two TPD peaks, when the lateral intermolecular interactions are neglected, it is sufficient that the CO adsorbs almost exclusively at step-edges at low coverage (at 200 K the 0.05 eV corresponds to 3 kT). The emergence of the two TPD peaks on Cu(4 1 0) is therefore attributed to a combination of step-edge preference and lateral repulsion between CO molecules, which increases with increasing coverages and diminishes the net desorption energy of CO. DFT calculations further reveal that the reason for the significant increase of saturation coverage on Cu(4 1 0) compared to Cu(1 0 0) is related to the geometry of the step-edge that allows the CO molecules adsorbed thereon to tilt away from the nearest neighboring CO molecules adsorbed at the terrace and therefore to effectively reduce the lateral repulsion.
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Affiliation(s)
- Anton Kokalj
- Department of Physical and Organic Chemistry, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
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9
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Hong SY, Xu P, Camillone NR, White MG, Camillone N. Adlayer structure dependent ultrafast desorption dynamics in carbon monoxide adsorbed on Pd (111). J Chem Phys 2017; 145:014704. [PMID: 27394118 DOI: 10.1063/1.4954408] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
We report our ultrafast photoinduced desorption investigation of the coverage dependence of substrate-adsorbate energy transfer in carbon monoxide adlayers on the (111) surface of palladium. As the CO coverage is increased, the adsorption site population shifts from all threefold hollows (up to 0.33 ML), to bridge and near bridge (>0.5 to 0.6 ML) and finally to mixed threefold hollow plus top site (at saturation at 0.75 ML). We show that between 0.24 and 0.75 ML this progression of binding site motifs is accompanied by two remarkable features in the ultrafast photoinduced desorption of the adsorbates: (i) the desorption probability increases roughly two orders magnitude, and (ii) the adsorbate-substrate energy transfer rate observed in two-pulse correlation experiments varies nonmonotonically, having a minimum at intermediate coverages. Simulations using a phenomenological model to describe the adsorbate-substrate energy transfer in terms of frictional coupling indicate that these features are consistent with an adsorption-site dependent electron-mediated energy coupling strength, ηel, that decreases with binding site in the order: three-fold hollow > bridge and near bridge > top site. This weakening of ηel largely counterbalances the decrease in the desorption activation energy that accompanies this progression of adsorption site motifs, moderating what would otherwise be a rise of several orders of magnitude in the desorption probability. Within this framework, the observed energy transfer rate enhancement at saturation coverage is due to interadsorbate energy transfer from the copopulation of molecules bound in three-fold hollows to their top-site neighbors.
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Affiliation(s)
- Sung-Young Hong
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Pan Xu
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, USA
| | - Nina R Camillone
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Michael G White
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Nicholas Camillone
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, USA
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10
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Xu Y, Dibble CJ, Petrik NG, Smith RS, Joly AG, Tonkyn RG, Kay BD, Kimmel GA. A nanosecond pulsed laser heating system for studying liquid and supercooled liquid films in ultrahigh vacuum. J Chem Phys 2017; 144:164201. [PMID: 27131543 DOI: 10.1063/1.4947304] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
A pulsed laser heating system has been developed that enables investigations of the dynamics and kinetics of nanoscale liquid films and liquid/solid interfaces on the nanosecond time scale in ultrahigh vacuum (UHV). Details of the design, implementation, and characterization of a nanosecond pulsed laser system for transiently heating nanoscale films are described. Nanosecond pulses from a Nd:YAG laser are used to rapidly heat thin films of adsorbed water or other volatile materials on a clean, well-characterized Pt(111) crystal in UHV. Heating rates of ∼10(10) K/s for temperature increases of ∼100-200 K are obtained. Subsequent rapid cooling (∼5 × 10(9) K/s) quenches the film, permitting in-situ, post-heating analysis using a variety of surface science techniques. Lateral variations in the laser pulse energy are ∼±2.7% leading to a temperature uncertainty of ∼±4.4 K for a temperature jump of 200 K. Initial experiments with the apparatus demonstrate that crystalline ice films initially held at 90 K can be rapidly transformed into liquid water films with T > 273 K. No discernable recrystallization occurs during the rapid cooling back to cryogenic temperatures. In contrast, amorphous solid water films heated below the melting point rapidly crystallize. The nanosecond pulsed laser heating system can prepare nanoscale liquid and supercooled liquid films that persist for nanoseconds per heat pulse in an UHV environment, enabling experimental studies of a wide range of phenomena in liquids and at liquid/solid interfaces.
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Affiliation(s)
- Yuntao Xu
- Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, USA
| | - Collin J Dibble
- Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, USA
| | - Nikolay G Petrik
- Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, USA
| | - R Scott Smith
- Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, USA
| | - Alan G Joly
- Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, USA
| | - Russell G Tonkyn
- Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, USA
| | - Bruce D Kay
- Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, USA
| | - Greg A Kimmel
- Physical Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, USA
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11
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Inoue KI, Watanabe K, Sugimoto T, Matsumoto Y, Yasuike T. Disentangling Multidimensional Nonequilibrium Dynamics of Adsorbates: CO Desorption from Cu(100). PHYSICAL REVIEW LETTERS 2016; 117:186101. [PMID: 27834990 DOI: 10.1103/physrevlett.117.186101] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Indexed: 06/06/2023]
Abstract
Hot carriers at metal surfaces can drive nonthermal reactions of adsorbates. Characterizing nonequilibrium statistics among various degrees of freedom in an ultrafast time scale is crucial to understand and develop hot carrier-driven chemistry. Here we demonstrate multidimensional vibrational dynamics of carbon monoxide (CO) on Cu(100) along hot-carrier induced desorption studied by using time-resolved vibrational sum-frequency generation with phase-sensitive detection. Instantaneous frequency and amplitude of the CO internal stretching mode are tracked with a subpicosecond time resolution that is shorter than the vibrational dephasing time. These experimental results in combination with numerical analysis based on Langevin simulations enable us to extract nonequilibrium distributions of external vibrational modes of desorbing molecules. Superstatistical distributions are generated with mode-dependent frictional couplings in a few hundred femtoseconds after hot-electron excitation, and energy flow from hot electrons and intermode anharmonic coupling play crucial roles in the subsequent evolution of the non-Boltzman distributions.
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Affiliation(s)
- Ken-Ichi Inoue
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Kazuya Watanabe
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Toshiki Sugimoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Yoshiyasu Matsumoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Tomokazu Yasuike
- Department of Liberal Arts, The Open University of Japan, Chiba 261-8586, Japan
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12
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Oh J, Lim H, Arafune R, Jung J, Kawai M, Kim Y. Lateral Hopping of CO on Ag(110) by Multiple Overtone Excitation. PHYSICAL REVIEW LETTERS 2016; 116:056101. [PMID: 26894720 DOI: 10.1103/physrevlett.116.056101] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Indexed: 06/05/2023]
Abstract
A novel type of action spectrum representing multiple overtone excitations of the v(M-C) mode was observed for lateral hopping of a CO molecule on Ag(110) induced by inelastically tunneled electrons from the tip of a scanning tunneling microscope. The yield of CO hopping shows sharp increases at 261±4 mV, corresponding to the C-O internal stretching mode, and at 61±2, 90±2, and 148±7 mV, even in the absence of corresponding fundamental vibrational modes. The mechanism of lateral CO hopping on Ag(110) was explained by the multistep excitation of overtone modes of v(M-C) based on the numerical fitting of the action spectra, the nonlinear dependence of the hopping rate on the tunneling current, and the hopping barrier obtained from thermal diffusion experiments.
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Affiliation(s)
- Junepyo Oh
- Surface and Interface Science Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Hyunseob Lim
- Surface and Interface Science Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Chemistry, UNIST, UNIST-gil 50, Ulsan 689-798, Republic of Korea
- Center for Multidimensional Carbon Materials, Institute of Basic Science, UNIST-gil 50, Ulsan 689-798, Republic of Korea
| | - Ryuichi Arafune
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 304-0044, Japan
| | - Jaehoon Jung
- Surface and Interface Science Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department of Chemistry, University of Ulsan, 93 Daehak-ro, Nam-gu, Ulsan 680-749, Republic of Korea
| | - Maki Kawai
- Department of Advanced Materials Science, The University of Tokyo, Kashiwa, Chiba 277-8651, Japan
| | - Yousoo Kim
- Surface and Interface Science Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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13
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Omiya T, Arnolds H. Coverage dependent non-adiabaticity of CO on a copper surface. J Chem Phys 2014; 141:214705. [DOI: 10.1063/1.4902540] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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14
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Inoue KI, Watanabe K, Matsumoto Y. Instantaneous vibrational frequencies of diffusing and desorbing adsorbates: CO/Pt(111). J Chem Phys 2012; 137:024704. [PMID: 22803555 DOI: 10.1063/1.4733720] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Ken-ichi Inoue
- Department of Chemistry, The Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
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15
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García Rey N, Arnolds H. Hot hole-induced dissociation of NO dimers on a copper surface. J Chem Phys 2011; 135:224708. [DOI: 10.1063/1.3664861] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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16
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Watanabe K, Matsumoto Y, Yasuike T, Nobusada K. Adsorbate-Localized versus Substrate-Mediated Excitation Mechanisms for Generation of Coherent Cs–Cu Stretching Vibration at Cu(111). J Phys Chem A 2011; 115:9528-35. [DOI: 10.1021/jp112307k] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kazuya Watanabe
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Yoshiyasu Matsumoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Tomokazu Yasuike
- Institute for Molecular Science and The Graduate University for Advanced Studies (SOKENDAI), Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Katsuyuki Nobusada
- Institute for Molecular Science and The Graduate University for Advanced Studies (SOKENDAI), Myodaiji, Okazaki, Aichi 444-8585, Japan
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17
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Ceotto M, Dell’Angelo D, Tantardini GF. Multiple coherent states semiclassical initial value representation spectra calculations of lateral interactions for CO on Cu(100). J Chem Phys 2010; 133:054701. [DOI: 10.1063/1.3462242] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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18
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Mishima K, Yamashita K. Free-time and fixed end-point optimal control theory in dissipative media: application to entanglement generation and maintenance. J Chem Phys 2009; 131:014109. [PMID: 19586098 DOI: 10.1063/1.3159002] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
We develop monotonically convergent free-time and fixed end-point optimal control theory (OCT) in the density-matrix representation to deal with quantum systems showing dissipation. Our theory is more general and flexible for tailoring optimal laser pulses in order to control quantum dynamics with dissipation than the conventional fixed-time and fixed end-point OCT in that the optimal temporal duration of laser pulses can also be optimized exactly. To show the usefulness of our theory, it is applied to the generation and maintenance of the vibrational entanglement of carbon monoxide adsorbed on the copper (100) surface, CO/Cu(100). We demonstrate the numerical results and clarify how to combat vibrational decoherence as much as possible by the tailored shapes of the optimal laser pulses. It is expected that our theory will be general enough to be applied to a variety of dissipative quantum dynamics systems because the decoherence is one of the quantum phenomena sensitive to the temporal duration of the quantum dynamics.
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Affiliation(s)
- K Mishima
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan.
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19
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Sakong S, Kratzer P, Han X, Laß K, Weingart O, Hasselbrink E. Density-functional theory study of vibrational relaxation of CO stretching excitation on Si(100). J Chem Phys 2008; 129:174702. [DOI: 10.1063/1.2993254] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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20
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Arnolds H, King DA, Lane IM. Inducing non-adiabatic effects through coadsorption: CO+NO on iridium. Chem Phys 2008. [DOI: 10.1016/j.chemphys.2008.01.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Frischkorn C, Wolf M. Femtochemistry at metal surfaces: nonadiabatic reaction dynamics. Chem Rev 2007; 106:4207-33. [PMID: 17031984 DOI: 10.1021/cr050161r] [Citation(s) in RCA: 274] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Christian Frischkorn
- Freie Universität Berlin, Fachbereich Physik, Arnimallee 14, 14195 Berlin, Germany.
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22
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Nagata Y, Tanimura Y, Mukamel S. Two-dimensional infrared surface spectroscopy for CO on Cu(100): Detection of intermolecular coupling of adsorbates. J Chem Phys 2007; 126:204703. [PMID: 17552785 DOI: 10.1063/1.2727445] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Surface-specific infrared signals obtained by subjecting the system to two infrared laser pulses are calculated for an admixture of CO and isotopic CO on Cu(100) by using molecular dynamics simulation based on a stability matrix formalism. The two-dimensional profiles of the signals in the frequency domain show both diagonal and cross peaks. The former peaks mainly arise from the overtones of the CO and isotopic CO, while the latter represent the couplings between those. As temperature is increased, the phases of cross peaks in a second-order infrared response function change significantly, while those of diagonal peaks are unchanged. The authors show that the phase shifts are originated from the potential anharmonicities due to the electronic interaction between adsorbates. Using a model with two dipole moments, they find that the frustrated rotational mode activated with temperature has effects on the anharmonicity. These results indicate that two-dimensional infrared surface spectroscopy reveals the anharmonic couplings between adsorbates and surface atoms or between adsorbates which cannot be observed in first-order spectroscopy.
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Affiliation(s)
- Yuki Nagata
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan
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23
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Micha DA, Leathers A, Thorndyke B. Density Matrix Treatment of Electronically Excited Molecular Systems: Applications to Gaseous and Adsorbate Dynamics. QUANTUM DYNAMICS OF COMPLEX MOLECULAR SYSTEMS 2007. [DOI: 10.1007/978-3-540-34460-5_7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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24
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Saalfrank P. Quantum Dynamical Approach to Ultrafast Molecular Desorption from Surfaces. Chem Rev 2006; 106:4116-59. [PMID: 17031982 DOI: 10.1021/cr0501691] [Citation(s) in RCA: 130] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Peter Saalfrank
- Theoretische Chemie, Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam-Golm, Germany
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25
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Matsumoto Y, Watanabe K. Coherent Vibrations of Adsorbates Induced by Femtosecond Laser Excitation. Chem Rev 2006; 106:4234-60. [PMID: 17031985 DOI: 10.1021/cr050165w] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Yoshiyasu Matsumoto
- National Institutes of Natural Sciences, Institute for Molecular Science, Okazaki, Aichi 444-8585, Japan.
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26
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Kubota J, Kusafuka K, Wada A, Domen K, Kano SS. Time-resolved sum-frequency generation spectroscopy of methoxy and deuterated methoxy on Ni(111) using near-infrared laser pulses. J Phys Chem B 2006; 110:10785-91. [PMID: 16771327 DOI: 10.1021/jp060699g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Methoxy (CH3O-) and deuterated (d-) methoxy (CD3O-) species on Ni(111) are investigated by sum-frequency generation (SFG) spectroscopy. Methoxy adsorbed on the Ni(111) surface is confirmed by SFG spectroscopy to be oriented normal to the surface. Two resonant peaks produced by methoxy, at 2921 and 2821 cm(-1), are assigned to Fermi resonance between the CH symmetric stretching and overtone modes. Deuterated methoxy exhibits a single strong peak at 2051 cm(-1) assigned to the CD symmetric stretching mode. Investigation of the sub-nanosecond transient behavior of methoxy and d-methoxy species on Ni(111) under short-pulse laser pumping at 1064 nm reveals a clear weakening and recovery of the SFG peaks upon heating. The observed temporal profile is reproduced by simulation assuming that the original methoxy in the ground state is in chemical equilibrium with a new state produced by instantaneous heating. The dependence of the SFG spectra on the initial substrate temperature is also reproduced by the simulation. The simulation suggests a temperature jump of 250 K upon laser pumping, inducing a change in the molecular orientation or adsorption site of methoxy on the Ni(111) surface without decomposition of methoxy to adsorbed CO and hydrogen, which occurs under normal heating at 200 K.
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Affiliation(s)
- Jun Kubota
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuda, Midori-ku, Yokohama 226-8503, Japan.
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Bauer C, Abid JP, Girault HH. Hot Adsorbate-Induced Retardation of the Internal Thermalization of Nonequilibrium Electrons in Adsorbate-Covered Metal Nanoparticles. J Phys Chem B 2006; 110:4519-23. [PMID: 16526676 DOI: 10.1021/jp060179l] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Femtosecond transient absorption spectroscopy has been used to investigate the electron-electron scattering dynamics in sulfate-covered gold nanoparticles of 2.5 and 9.2 nm in diameter. We observe an unexpected retardation of the absolute internal thermalization time compared to bulk gold, which is attributed to a negative feedback by the vibrationally excited sulfate molecules. These hot adsorbates, acting as a transient energy reservoir, result from the back and forth inelastic scattering of metal nonequilibrium electrons into the pi orbital of the sulfate. The vibrationally excited adsorbates temporarily govern the dynamical behavior of nonequilibrium electrons in the metal by re-emitting hot electrons. In other terms, metal electrons reabsorb the energy deposited in the hot sulfates by a mechanism involving the charge resonance between the sulfate molecules and the gold NPs. The higher surface-to-volume ratio of sulfate-covered gold nanoparticles of 2.5 nm leads to a stronger inhibition of the internal thermalization. Interestingly, we also note an analogy between the mechanism described here for the slow-down of electron-electron scattering in metal nanoparticles by the hot adsorbates and the hot phonon-induced retardation of hot charge carriers cooling in semiconductors.
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Kubota J, Wada A, Domen K. Time-Resolved Sum-Frequency Generation Spectroscopy of Cyclohexane Adsorbed on Ni(111) under Ultrashort NIR Laser Pulse Irradiation. J Phys Chem B 2005; 109:20973-8. [PMID: 16853719 DOI: 10.1021/jp0536706] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The adsorption of cyclohexane on Ni(111) was studied by infrared-visible sum-frequency generation (SFG) spectroscopy with and without near-infrared (NIR) pump pulse irradiation. Two adsorption states of cyclohexane were found in the monolayer region, a low-coverage state showing SFG peaks at 2740, 2815, and 2865 cm(-1), and a high-coverage state showing peaks at 2740, 2815, and 2905 cm(-1). Both states coexisted on the saturated Ni(111) surface. The broad peak at 2740 cm(-1) was due to the softened CH stretching mode of the axial CH groups of cyclohexane that point toward the Ni(111) surface. The peaks at 2815 and 2865 (or 2905) cm(-1) were due to the symmetric and asymmetric stretching modes of CH(2) groups, respectively, that were free from the surface. Irradiation with NIR pulses caused a temporary jump in temperature at the Ni(111) surface and enhanced the intensity of the 2905 cm(-1) peak, but weakened the other peaks. This indicates that the temperature jump excited the cyclohexane molecules from the low-coverage state to the high-coverage state. The dynamics of the structural change observed in the adsorbed cyclohexane on NIR irradiation is discussed.
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Affiliation(s)
- Jun Kubota
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuda, Midori-ku, Yokohama 226-8503, Japan.
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29
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Lass K, Han X, Hasselbrink E. The surprisingly short vibrational lifetime of the internal stretch of CO adsorbed on Si(100). J Chem Phys 2005; 123:051102. [PMID: 16108618 DOI: 10.1063/1.1993550] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Picosecond sum-frequency generation spectroscopy has been employed to study the dynamics of the internal stretch vibration of CO adsorbed on a Si(100) surface. Using the IR pump-sum-frequency generation probe method, the vibrational lifetime of the C-O stretch vibration has been determined to be 2.3+/-0.5 ns. Within the experimental error limits, the identical lifetime was observed for 12C16O and 13C16O. No strong dependency on the carrier density in the substrate, inferred from measurements using differently doped crystals, was observed.
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Affiliation(s)
- Kristian Lass
- Fachbereich Chemie, Universität Duisburg-Essen, D-45117 Essen, Germany
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30
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A theoretical study of vibrational relaxation of NO adsorbed on a Pt(1 1 1) surface: multi-dimensional and multi-phonon study. Chem Phys Lett 2004. [DOI: 10.1016/j.cplett.2004.04.117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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31
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Bartels L, Wang F, Möller D, Knoesel E, Heinz TF. Real-Space Observation of Molecular Motion Induced by Femtosecond Laser Pulses. Science 2004; 305:648-51. [PMID: 15218095 DOI: 10.1126/science.1099770] [Citation(s) in RCA: 124] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Femtosecond laser irradiation is used to excite adsorbed CO molecules on a Cu110 surface; the ensuing motion of individual molecules across the surface is characterized on a site-to-site basis by in situ scanning tunneling microscopy. Adsorbate motion both along and perpendicular to the rows of the Cu110 surface occurs readily, in marked contrast to the behavior seen for equilibrium diffusion processes. The experimental findings for the probability and direction of the molecular motion can be understood as a manifestation of strong coupling between the adsorbates' lateral degrees of freedom and the substrate electronic excitation produced by the femtosecond laser radiation.
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Affiliation(s)
- Ludwig Bartels
- Pierce Hall, University of California, Riverside, CA 92521, USA
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32
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Kubota J, Yoda E, Ishizawa N, Wada A, Domen K, Kano SS. Site-Hopping of Adsorbed CO in c(4×2)-CO/Ni(111) by Laser-Induced Temperature Jump: Time-Resolved Sum-Frequency Generation Observation. J Phys Chem B 2003. [DOI: 10.1021/jp030123g] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jun Kubota
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuda, Midori-ku, Yokohama 226-8503, Japan, and Computer and Information Sciences, Hosei University, 3-7-2 Kajino, Koganei, Tokyo 184-8584, Japan
| | - Eisuke Yoda
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuda, Midori-ku, Yokohama 226-8503, Japan, and Computer and Information Sciences, Hosei University, 3-7-2 Kajino, Koganei, Tokyo 184-8584, Japan
| | - Naoko Ishizawa
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuda, Midori-ku, Yokohama 226-8503, Japan, and Computer and Information Sciences, Hosei University, 3-7-2 Kajino, Koganei, Tokyo 184-8584, Japan
| | - Akihide Wada
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuda, Midori-ku, Yokohama 226-8503, Japan, and Computer and Information Sciences, Hosei University, 3-7-2 Kajino, Koganei, Tokyo 184-8584, Japan
| | - Kazunari Domen
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuda, Midori-ku, Yokohama 226-8503, Japan, and Computer and Information Sciences, Hosei University, 3-7-2 Kajino, Koganei, Tokyo 184-8584, Japan
| | - Satoru S. Kano
- Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuda, Midori-ku, Yokohama 226-8503, Japan, and Computer and Information Sciences, Hosei University, 3-7-2 Kajino, Koganei, Tokyo 184-8584, Japan
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33
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Micha DA, Santana A. Dissipative Quantum Dynamics with Many Coupled Molecular States: Photodesorption from Metal Surfaces. J Phys Chem A 2003. [DOI: 10.1021/jp030441f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- D. A. Micha
- Quantum Theory Project Departments of Chemistry and of Physics University of Florida, Gainesville, Florida 32611-8435
| | - A. Santana
- Quantum Theory Project Departments of Chemistry and of Physics University of Florida, Gainesville, Florida 32611-8435
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34
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Torres Sánchez RM, Castro Luna AM, Zerbino JO. CO adsorption on copper in alkaline electrolytes: an electrochemical and ellipsometric study. J Colloid Interface Sci 2003; 264:114-20. [PMID: 12885527 DOI: 10.1016/s0021-9797(03)00334-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The influence of CO on the passive behavior of copper was analyzed in the potential region near the rest potential in borax solutions (pH 9.2) by cyclic voltammetry, ellipsometry, and surface charge determination techniques. The oxide formation is explained as a sequence of Cu(2)O growth, cation adsorption, Cu(II), and dissolution steps, similarly to previously reported investigations for the metal in free CO solutions. The CO adsorption hinders the cationic defect in the outer oxide layer and accelerates the Cu(2)O growth both at open circuit and in controlled potential experiments. The isoelectric point, iep, obtained at pH 10.8 for both the metal Cu and CuO particles in KCl solutions shifts to pH 10.1 for copper particles in the presence of CO. The iep indicates a CuO coating on Cu metallic particles in the absence of CO.
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Affiliation(s)
- R M Torres Sánchez
- Centro de Tecnología de Recursos Minerales y Cerámica, C.C. 49, 1987 M.B. Gonnet, Argentina
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35
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Kubota J, Wada A, Kano SS, Domen K. Time-resolved study of D2O ice crystal on CO/Pt(111) by ultra-short NIR laser pumping: melting and recrystallization without desorption. Chem Phys Lett 2003. [DOI: 10.1016/s0009-2614(03)01087-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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36
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Onda K, Iwasawa Y, Wada A. Vibrational relaxation of adsorbate and adsorbent in the CO-adsorbed DM-20 zeolite system. Chem Phys Lett 2003. [DOI: 10.1016/s0009-2614(03)00071-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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37
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Santana A, Micha D. Optical control of photodesorption with chirped femtosecond pulses: nonlinear response treatment for CO/Cu(001). Chem Phys Lett 2003. [DOI: 10.1016/s0009-2614(02)02037-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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38
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Transient responses of SFG spectra of D2O ice/CO/Pt(111) interface with irradiation of ultra-short NIR pump pulses. Chem Phys Lett 2002. [DOI: 10.1016/s0009-2614(02)01141-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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39
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Bandara A, Kano SS, Onda K, Katano S, Kubota J, Domen K, Hirose C, Wada A. SFG Spectroscopy of CO/Ni(111): UV Pumping and the Transient Hot Band Transition of Adsorbed CO. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2002. [DOI: 10.1246/bcsj.75.1125] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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40
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Komeda T, Kim Y, Kawai M, Persson BNJ, Ueba H. Lateral hopping of molecules induced by excitation of internal vibration mode. Science 2002; 295:2055-8. [PMID: 11896272 DOI: 10.1126/science.1069016] [Citation(s) in RCA: 318] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
We demonstrate electron-stimulated migration for carbon monoxide (CO) molecules adsorbed on the Pd(110) surface, which is initiated by the excitation of a high-frequency (HF) vibrational mode (C-O stretching mode) with inelastic tunneling electrons from the tip of scanning tunneling microscopy. The hopping phenomenon, however, cannot be detected for CO/Cu(110), even though the hopping barrier is lower than in the CO/Pd(110) case. A theoretical model, which is based on the anharmonic coupling between low-frequency modes (the hindered-translational mode related to the lateral hopping) and the HF mode combined with electron-hole pair excitation, can explain why the hopping of CO is observed on Pd(110) but not on Cu(110).
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Affiliation(s)
- T Komeda
- RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
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41
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Micha DA, Santana A, Salam A. Nonlinear optical response and yield in the femtosecond photodesorption of CO from the Cu(001) surface: A density matrix treatment. J Chem Phys 2002. [DOI: 10.1063/1.1448486] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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42
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43
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Roke S, Kleyn AW, Bonn M. Ultrafast Surface Dynamics Studied with Femtosecond Sum Frequency Generation. J Phys Chem A 2001. [DOI: 10.1021/jp004167q] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sylvie Roke
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Aart W. Kleyn
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Mischa Bonn
- Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, P.O. Box 9502, 2300 RA Leiden, The Netherlands
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44
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Miret-Artés S, Micha DA, Beksic D. Spectral line shapes in dissipative systems: Molecules adsorbed on metal surfaces. J Chem Phys 2001. [DOI: 10.1063/1.1340672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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45
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Pykhtin MV, Rappe AM, Lewis SP. Adsorbate aggregation and relaxation of low-frequency vibrations. J Chem Phys 2000. [DOI: 10.1063/1.1323227] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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46
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Abstract
Theoretical aspects of dynamical processes at metal surfaces are reviewed. Experimental challenges to theory are presented and progress toward meeting these challenges is appraised. Topics include adsorbate vibrational energy flow, inelastic molecule-surface scattering, adsorption, transient mobility, dissociation, desorption, photochemistry, and electron-induced chemistry at metal surfaces. Experimental examples cited illustrate the richness of dynamical phenomena to be understood and the necessity of developing multidimensional, beyond Born-Oppenheimer, formulations of adsorbate dynamics. Classical mechanical and quantum mechanical treatments of dynamics are contrasted. The importance of including phonon and electron-hole pair dissipation in theories of adsorbate dynamics is emphasized, and strategies for doing this in classical and quantum treatments are presented.
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Affiliation(s)
- J C Tully
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, USA.
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47
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Funk S, Bonn M, Denzler DN, Hess C, Wolf M, Ertl G. Desorption of CO from Ru(001) induced by near-infrared femtosecond laser pulses. J Chem Phys 2000. [DOI: 10.1063/1.481626] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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48
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Celio H, Trenary M. Infrared intensity enhancement of the CN stretch of HCN by coadsorbed CO on the Cu(100) surface. PHYSICAL REVIEW LETTERS 2000; 84:4902-4905. [PMID: 10990827 DOI: 10.1103/physrevlett.84.4902] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/1999] [Indexed: 05/23/2023]
Abstract
Reflection absorption infrared spectra reveal a strong enhancement in the intensity of the CN stretch in a mixed ordered overlayer of HCN and CO on the Cu(100) surface. Various combinations of HCN and CO isotopomers show that the intensity enhancement decreases with increasing frequency difference between nu(CN) and nu(CO). The intensity of the 2092 cm(-1) band of H12C14N is enhanced by a factor of 155+/-20 through coupling to the 2077 cm(-1) band of 12C16O. A simple two-state coupling model explains the isotopomer dependence of the degree of enhancement.
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Affiliation(s)
- H Celio
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, USA
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49
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Bonn M, Hess C, Funk S, Miners JH, Persson BN, Wolf M, Ertl G. Femtosecond surface vibrational spectroscopy of CO adsorbed on Ru(001) during desorption. PHYSICAL REVIEW LETTERS 2000; 84:4653-4656. [PMID: 10990763 DOI: 10.1103/physrevlett.84.4653] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/1999] [Indexed: 05/23/2023]
Abstract
Using time-resolved sum-frequency generation spectroscopy, the C- O stretch vibration of carbon monoxide adsorbed on a single-crystal Ru(001) surface is investigated during femtosecond near-IR laser excitation leading to desorption. A large transient redshift, a broadening of the resonance, and a strong decrease in intensity are observed. These originate from coupling of the C- O stretch to low-frequency modes, especially the frustrated rotation, that are highly excited in the desorption process.
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Affiliation(s)
- M Bonn
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
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50
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Bahel A, Bačić Z. Six-dimensional quantum treatment of the vibrations of diatomic adsorbates on solid surfaces: CO on Cu(100). J Chem Phys 1999. [DOI: 10.1063/1.480494] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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