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Shkvarin AS, Merentsov AI, Tsud N, Titov AN. Effect of the Titanium Self-Intercalation on the Electronic Structure of TiSe 2. Inorg Chem 2021; 60:185-194. [PMID: 33319552 DOI: 10.1021/acs.inorgchem.0c02797] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The effect of the superstoichiometric Ti intercalation on the electronic structure of TiSe2 was studied by using X-ray photoelectron spectroscopy in nonresonant and resonant modes along with the DOS (density of states) calculations. It was shown that the presence of the Ti atoms in the interlayer space leads to the formation of the Ti 3dz2/Ti 3dz2 hybridized band between the Ti atoms in the regular lattice positions and Ti atoms in the interlayer space. The charge transfer to the conduction band was not observed in this case.
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Affiliation(s)
- Alexey S Shkvarin
- M.N. Miheev Institute of Metal Physics, Ural Branch of Russian Academy of Sciences, 620137 Ekaterinburg, Russia
| | - Alexander I Merentsov
- M.N. Miheev Institute of Metal Physics, Ural Branch of Russian Academy of Sciences, 620137 Ekaterinburg, Russia
| | - Nataliya Tsud
- Charles University, Faculty of Mathematics and Physics, Department of Surface and Plasma Science, Charles University, 18000 Prague, Czech Republic
| | - Alexander N Titov
- M.N. Miheev Institute of Metal Physics, Ural Branch of Russian Academy of Sciences, 620137 Ekaterinburg, Russia
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2
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Shkvarin AS, Merentsov AI, Postnikov MS, Yarmoshenko YM, Shkvarina EG, Titov AN. Specific features of the electronic structure of Co xTiSe 2 according to the resonant photoemission data. Phys Chem Chem Phys 2020; 22:16934-16942. [DOI: 10.1039/d0cp01065k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The effect of atomic ordering in the Co sublattice on the electronic structure of the CoxTiSe2 compounds has been studied using a complex of spectral techniques – XPS, XAS, and ResPES, along with theoretical calculations of the total and partial DOS.
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Affiliation(s)
- A. S. Shkvarin
- M. N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences
- 620990 Ekaterinburg
- Russia
| | - A. I. Merentsov
- M. N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences
- 620990 Ekaterinburg
- Russia
| | - M. S. Postnikov
- M. N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences
- 620990 Ekaterinburg
- Russia
| | - Yu. M. Yarmoshenko
- M. N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences
- 620990 Ekaterinburg
- Russia
| | - E. G. Shkvarina
- M. N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences
- 620990 Ekaterinburg
- Russia
| | - A. N. Titov
- M. N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences
- 620990 Ekaterinburg
- Russia
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Nisoli M, Decleva P, Calegari F, Palacios A, Martín F. Attosecond Electron Dynamics in Molecules. Chem Rev 2017; 117:10760-10825. [DOI: 10.1021/acs.chemrev.6b00453] [Citation(s) in RCA: 261] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Mauro Nisoli
- Department
of Physics, Politecnico di Milano, 20133 Milano, Italy
- Institute for Photonics and Nanotechnologies, IFN-CNR, 20133 Milano, Italy
| | - Piero Decleva
- Dipartimento
di Scienze Chimiche e Farmaceutiche, Universitá di Trieste and IOM- CNR, 34127 Trieste, Italy
| | - Francesca Calegari
- Institute for Photonics and Nanotechnologies, IFN-CNR, 20133 Milano, Italy
- Center for Free-Electron Laser Science, DESY, 22607 Hamburg, Germany
- Department
of Physics, University of Hamburg, 20355 Hamburg, Germany
| | - Alicia Palacios
- Departamento
de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Fernando Martín
- Departamento
de Química, Módulo 13, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Instituto Madrileño de Estudios Avanzados en Nanociencia, 28049 Madrid, Spain
- Condensed
Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049 Madrid, Spain
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Schmidt N, Wenzel J, Dreuw A, Fink RH, Hieringer W. Matrix effects in the C 1s photoabsorption spectra of condensed naphthalene. J Chem Phys 2016; 145:234307. [DOI: 10.1063/1.4972013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Norman Schmidt
- Interdisciplinary Center of Molecular Materials (ICMM) and Interdisciplinary Center for Interface-Controlled Processes (IC-ICP), Department of Chemistry and Pharmacy, Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, D-91058 Erlangen, Germany
| | - Jan Wenzel
- Interdisciplinary Center for Scientific Computing, Ruprecht-Karls University, Im Neuenheimer Feld 205, 69120 Heidelberg, Germany
| | - Andreas Dreuw
- Interdisciplinary Center for Scientific Computing, Ruprecht-Karls University, Im Neuenheimer Feld 205, 69120 Heidelberg, Germany
| | - Rainer H. Fink
- Interdisciplinary Center of Molecular Materials (ICMM) and Interdisciplinary Center for Interface-Controlled Processes (IC-ICP), Department of Chemistry and Pharmacy, Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, D-91058 Erlangen, Germany
| | - Wolfgang Hieringer
- Lehrstuhl für Theoretische Chemie and Interdisciplinary Center of Molecular Materials (ICMM), Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Egerlandstraße 3, D-91058 Erlangen, Germany
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Adak O, Kladnik G, Bavdek G, Cossaro A, Morgante A, Cvetko D, Venkataraman L. Ultrafast Bidirectional Charge Transport and Electron Decoherence at Molecule/Surface Interfaces: A Comparison of Gold, Graphene, and Graphene Nanoribbon Surfaces. NANO LETTERS 2015; 15:8316-21. [PMID: 26574713 DOI: 10.1021/acs.nanolett.5b03962] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
We investigate bidirectional femtosecond charge transfer dynamics using the core-hole clock implementation of resonant photoemission spectroscopy from 4,4'-bipyridine molecular layers on three different surfaces: Au(111), epitaxial graphene on Ni(111), and graphene nanoribbons. We show that the lowest unoccupied molecular orbital (LUMO) of the molecule drops partially below the Fermi level upon core-hole creation in all systems, opening an additional decay channel for the core-hole, involving electron donation from substrate to the molecule. Furthermore, using the core-hole clock method, we find that the bidirectional charge transfer time between the substrate and the molecule is fastest on Au(111), with a 2 fs time, then around 4 fs for epitaxial graphene and slowest with graphene nanoribbon surface, taking around 10 fs. Finally, we provide evidence for fast phase decoherence of the core-excited LUMO* electron through an interaction with the substrate providing the first observation of such a fast bidirectional charge transfer across an organic/graphene interface.
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Affiliation(s)
- Olgun Adak
- Department of Applied Physics and Applied Mathematics, Columbia University , New York, New York 10027, United States
| | - Gregor Kladnik
- Faculty of Mathematics and Physics, University of Ljubljana , Ljubljana, Slovenia
- Department of Physics, University of Trieste , Trieste, Italy
| | - Gregor Bavdek
- Faculty of Education, University of Ljubljana , Ljubljana, Slovenia
| | - Albano Cossaro
- CNR-IOM Laboratorio Nazionale TASC , Basovizza SS-14, km 163.5, I-34012 Trieste, Italy
| | - Alberto Morgante
- Department of Physics, University of Trieste , Trieste, Italy
- CNR-IOM Laboratorio Nazionale TASC , Basovizza SS-14, km 163.5, I-34012 Trieste, Italy
| | - Dean Cvetko
- Faculty of Mathematics and Physics, University of Ljubljana , Ljubljana, Slovenia
- CNR-IOM Laboratorio Nazionale TASC , Basovizza SS-14, km 163.5, I-34012 Trieste, Italy
| | - Latha Venkataraman
- Department of Applied Physics and Applied Mathematics, Columbia University , New York, New York 10027, United States
- Department of Chemistry, Columbia University , New York, New York 10027, United States
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7
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Quantifying through-space charge transfer dynamics in π-coupled molecular systems. Nat Commun 2013; 3:1086. [PMID: 23011140 DOI: 10.1038/ncomms2083] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Accepted: 08/22/2012] [Indexed: 11/09/2022] Open
Abstract
Understanding the role of intermolecular interaction on through-space charge transfer characteristics in π-stacked molecular systems is central to the rational design of electronic materials. However, a quantitative study of charge transfer in such systems is often difficult because of poor control over molecular morphology. Here we use the core-hole clock implementation of resonant photoemission spectroscopy to study the femtosecond charge-transfer dynamics in cyclophanes, which consist of two precisely stacked π-systems held together by aliphatic chains. We study two systems, [2,2]paracyclophane (22PCP) and [4,4]paracyclophane (44PCP), with inter-ring separations of 3.0 and 4.0 Å, respectively. We find that charge transfer across the π-coupled system of 44PCP is 20 times slower than in 22PCP. We attribute this difference to the decreased inter-ring electronic coupling in 44PCP. These measurements illustrate the use of core-hole clock spectroscopy as a general tool for quantifying through-space coupling in π-stacked systems.
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On the absence of resonance in the valence band photoemission at L2 resonance edge and the delayed onset of the normal Auger-decay. Chem Phys 2012. [DOI: 10.1016/j.chemphys.2012.04.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Ikeura-Sekiguchi H, Sekiguchi T. Attosecond electron delocalization in the conduction band through the phosphate backbone of genomic DNA. PHYSICAL REVIEW LETTERS 2007; 99:228102. [PMID: 18233331 DOI: 10.1103/physrevlett.99.228102] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2007] [Indexed: 05/25/2023]
Abstract
Partial density of states in the empty conduction band of the phosphate backbone sites in DNA was probed using energy-dependent resonant Auger spectroscopy. Results show that genomic DNA with periodic backbones exhibits an extended state despite separation of each phosphate group by an insulating sugar group. In antisense DNA with an aperiodic backbone, the equivalent state is localized. Remarkably rapid electron delocalization occurs at ca. 740 attoseconds for wet DNA, as estimated using the core-hole clock method. Such delocalization is comparable to the Fermi velocity of carbon nanotubes.
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Affiliation(s)
- Hiromi Ikeura-Sekiguchi
- National Institute of Advanced Industrial Science and Technology (AIST), Central 2-5, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
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Deppe M, Föhlisch A, Hennies F, Nagasono M, Beye M, Sánchez-Portal D, Echenique PM, Wurth W. Ultrafast charge transfer and atomic orbital polarization. J Chem Phys 2007; 127:174708. [DOI: 10.1063/1.2781395] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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11
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Chulkov EV, Borisov AG, Gauyacq JP, Sanchez-Portal D, Silkin VM, Zhukov VP, Echenique PM. Electronic Excitations in Metals and at Metal Surfaces. Chem Rev 2006; 106:4160-206. [PMID: 17031983 DOI: 10.1021/cr050166o] [Citation(s) in RCA: 208] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- E V Chulkov
- Departamento de Física de Materiales and Centro Mixto CSIC-UPV/EHU, Facultad de Ciencias Químicas, Universidad del País Vasco UPV/EHU, Apdo. 1072, 20080 San Sebastian/Donostia, Basque Country, Spain.
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Vijayalakshmi S, Föhlisch A, Hennies F, Pietzsch A, Nagasono M, Wurth W, Borisov A, Gauyacq J. Surface projected electronic band structure and adsorbate charge transfer dynamics: Ar adsorbed on Cu(111) and Cu(100). Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.06.062] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Föhlisch A, Feulner P, Hennies F, Fink A, Menzel D, Sanchez-Portal D, Echenique PM, Wurth W. Direct observation of electron dynamics in the attosecond domain. Nature 2005; 436:373-6. [PMID: 16034414 DOI: 10.1038/nature03833] [Citation(s) in RCA: 275] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2005] [Accepted: 05/20/2005] [Indexed: 11/08/2022]
Abstract
Dynamical processes are commonly investigated using laser pump-probe experiments, with a pump pulse exciting the system of interest and a second probe pulse tracking its temporal evolution as a function of the delay between the pulses. Because the time resolution attainable in such experiments depends on the temporal definition of the laser pulses, pulse compression to 200 attoseconds (1 as = 10(-18) s) is a promising recent development. These ultrafast pulses have been fully characterized, and used to directly measure light waves and electronic relaxation in free atoms. But attosecond pulses can only be realized in the extreme ultraviolet and X-ray regime; in contrast, the optical laser pulses typically used for experiments on complex systems last several femtoseconds (1 fs = 10(-15) s). Here we monitor the dynamics of ultrafast electron transfer--a process important in photo- and electrochemistry and used in solid-state solar cells, molecular electronics and single-electron devices--on attosecond timescales using core-hole spectroscopy. We push the method, which uses the lifetime of a core electron hole as an internal reference clock for following dynamic processes, into the attosecond regime by focusing on short-lived holes with initial and final states in the same electronic shell. This allows us to show that electron transfer from an adsorbed sulphur atom to a ruthenium surface proceeds in about 320 as.
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Affiliation(s)
- A Föhlisch
- Institut für Experimentalphysik, Universität Hamburg, Luruper Chaussee 149, D-22761 Hamburg, Germany
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Schnadt J, O’Shea JN, Patthey L, Kjeldgaard L, Åhlund J, Nilson K, Schiessling J, Krempaský J, Shi M, Karis O, Glover C, Siegbahn H, Mårtensson N, Brühwiler PA. Excited-state charge transfer dynamics in systems of aromatic adsorbates on TiO2 studied with resonant core techniques. J Chem Phys 2003. [DOI: 10.1063/1.1586692] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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15
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Föhlisch A, Menzel D, Feulner P, Ecker M, Weimar R, Kostov K, Tyuliev G, Lizzit S, Larciprete R, Hennies F, Wurth W. Energy dependence of resonant charge transfer from adsorbates to metal substrates. Chem Phys 2003. [DOI: 10.1016/s0301-0104(02)00939-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Karis O, Nilsson A, Weinelt M, Wiell T, Puglia C, Wassdahl N, Mårtensson N, Samant M, Stöhr J. One-step and two-step description of deexcitation processes in weakly interacting systems. PHYSICAL REVIEW LETTERS 1996; 76:1380-1383. [PMID: 10061706 DOI: 10.1103/physrevlett.76.1380] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Ohno M. Comment on "Relation between copper L x-ray fluorescence and 2p x-ray photoelectron spectroscopies". PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:6127-6128. [PMID: 9981802 DOI: 10.1103/physrevb.52.6127] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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