1
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Freibert A, Mendive-Tapia D, Vendrell O, Huse N. A fully dynamical description of time-resolved resonant inelastic X-ray scattering of pyrazine. Phys Chem Chem Phys 2024; 26:22572-22581. [PMID: 39150720 DOI: 10.1039/d4cp00914b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
Recent advancements in ultrashort and intense X-ray sources have enabled the utilisation of resonant inelastic X-ray scattering (RIXS) as a probing technique for monitoring photoinduced dynamics in molecular systems. To account for dynamic phenomena like non-adiabatic transitions across the relevant electronic state manifold, a time-dependent framework is crucial. Here, we introduce a fully time-dependent approach for calculating transient RIXS spectra using wavepacket dynamics simulations, alongside an explicit treatment of the X-ray probe pulse that surpasses Kramers-Heisenberg-Dirac constraints. Our analysis of pyrazine at the nitrogen K-edge underscores the importance of considering nuclear motion effects in all electronic states involved in the transient RIXS process. As a result, we propose a numerically exact approach to computationally support and predict cutting-edge time-resolved RIXS experiments.
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Affiliation(s)
- Antonia Freibert
- Department of Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
- Theoretical Chemistry, Institute of Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 229, Heidelberg, 69120, Germany.
| | - David Mendive-Tapia
- Theoretical Chemistry, Institute of Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 229, Heidelberg, 69120, Germany.
| | - Oriol Vendrell
- Theoretical Chemistry, Institute of Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 229, Heidelberg, 69120, Germany.
| | - Nils Huse
- Department of Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
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2
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Freibert A, Mendive-Tapia D, Huse N, Vendrell O. Time-Dependent Resonant Inelastic X-ray Scattering of Pyrazine at the Nitrogen K-Edge: A Quantum Dynamics Approach. J Chem Theory Comput 2024; 20:2167-2180. [PMID: 38315564 PMCID: PMC10938531 DOI: 10.1021/acs.jctc.3c01259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/31/2023] [Accepted: 01/03/2024] [Indexed: 02/07/2024]
Abstract
We calculate resonant inelastic X-ray scattering spectra of pyrazine at the nitrogen K-edge in the time domain including wavepacket dynamics in both the valence and core-excited state manifolds. Upon resonant excitation, we observe ultrafast non-adiabatic population transfer between core-excited states within the core-hole lifetime, leading to molecular symmetry distortions. Importantly, our time-domain approach inherently contains the ability to manipulate the dynamics of this process by detuning the excitation energy, which effectively shortens the scattering duration. We also explore the impact of pulsed incident X-ray radiation, which provides a foundation for state-of-the-art time-resolved experiments with coherent pulsed light sources.
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Affiliation(s)
- Antonia Freibert
- Department
of Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
- Theoretical
Chemistry, Institute of Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - David Mendive-Tapia
- Theoretical
Chemistry, Institute of Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
| | - Nils Huse
- Department
of Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Oriol Vendrell
- Theoretical
Chemistry, Institute of Physical Chemistry, Heidelberg University, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
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3
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Söderström J, Ghosh A, Kjellsson L, Ekholm V, Tokushima T, Såthe C, Velasquez N, Simon M, Björneholm O, Duda L, Naves de Brito A, Odelius M, Liu JC, Wang J, Kimberg V, Agåker M, Rubensson JE, Gel'mukhanov F. Parity violation in resonant inelastic soft x-ray scattering at entangled core holes. SCIENCE ADVANCES 2024; 10:eadk3114. [PMID: 38354244 DOI: 10.1126/sciadv.adk3114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 01/12/2024] [Indexed: 02/16/2024]
Abstract
Resonant inelastic x-ray scattering (RIXS) is a major method for investigation of electronic structure and dynamics, with applications ranging from basic atomic physics to materials science. In RIXS applied to inversion-symmetric systems, it has generally been accepted that strict parity selectivity applies in the sub-kilo-electron volt region. In contrast, we show that the parity selection rule is violated in the RIXS spectra of the free homonuclear diatomic O2 molecule. By analyzing the spectral dependence on scattering angle, we demonstrate that the violation is due to the phase difference in coherent scattering at the two atomic sites, in analogy with Young's double-slit experiment. The result also implies that the interpretation of x-ray absorption spectra for inversion symmetric molecules in this energy range must be revised.
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Affiliation(s)
- Johan Söderström
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
| | - Anirudha Ghosh
- MAX IV Laboratory, Lund University, SE-221 00, Lund, Sweden
| | | | - Victor Ekholm
- MAX IV Laboratory, Lund University, SE-221 00, Lund, Sweden
| | | | - Conny Såthe
- MAX IV Laboratory, Lund University, SE-221 00, Lund, Sweden
| | - Nicolas Velasquez
- Sorbonne Université, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matiére et Rayonnement, F-75005 Paris, France
| | - Marc Simon
- Sorbonne Université, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matiére et Rayonnement, F-75005 Paris, France
| | - Olle Björneholm
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
| | - Laurent Duda
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
| | - Arnaldo Naves de Brito
- Department of Applied Physics, Institute of Physics Gleb Wataghin Campinas University, CEP, Street, 13083859 Campinas SP, Brazil
| | - Michael Odelius
- Department of Physics, Stockholm University, AlbaNova University Center, SE-106 91, Stockholm, Sweden
| | - Ji-Cai Liu
- School of Mathematics and Physics, North China Electric Power University, 102206 Beijing, China
- Hebei Key Laboratory of Physics and Energy Technology, North China Electric Power University, 071000 Baoding, China
| | - Jian Wang
- School of Mathematics and Physics, North China Electric Power University, 102206 Beijing, China
- School of Nuclear Science and Technology, North China Electric Power University, 102206 Beijing, China
| | - Victor Kimberg
- Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, SE-106 91 Stockholm, Sweden
| | - Marcus Agåker
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
- MAX IV Laboratory, Lund University, SE-221 00, Lund, Sweden
| | - Jan-Erik Rubensson
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20, Uppsala, Sweden
| | - Faris Gel'mukhanov
- Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, SE-106 91 Stockholm, Sweden
- Helmholtz Zentrum Berlin für Materialien und Energie, Institute for Methods and Instrumentation for Synchrotron Radiation Research, Albert-Einstein-Str. 15, D-12489 Berlin, Germany
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4
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Eckert S, Mascarenhas EJ, Mitzner R, Jay RM, Pietzsch A, Fondell M, Vaz da Cruz V, Föhlisch A. From the Free Ligand to the Transition Metal Complex: FeEDTA - Formation Seen at Ligand K-Edges. Inorg Chem 2022; 61:10321-10328. [PMID: 35764301 PMCID: PMC9277664 DOI: 10.1021/acs.inorgchem.2c00789] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Chelating agents are an integral part of transition metal complex chemistry with broad biological and industrial relevance. The hexadentate chelating agent ethylenediaminetetraacetic acid (EDTA) has the capability to bind to metal ions at its two nitrogen and four of its carboxylate oxygen sites. We use resonant inelastic X-ray scattering at the 1s absorption edge of the aforementioned elements in EDTA and the iron(III)-EDTA complex to investigate the impact of the metal-ligand bond formation on the electronic structure of EDTA. Frontier orbital distortions, occupation changes, and energy shifts through metal-ligand bond formation are probed through distinct spectroscopic signatures.
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Affiliation(s)
- Sebastian Eckert
- Institute
for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und
Energie GmbH, 12489 Berlin, Germany
| | - Eric J. Mascarenhas
- Institute
for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und
Energie GmbH, 12489 Berlin, Germany
- Institut
für Physik und Astronomie, Universität
Potsdam, 14476 Potsdam, Germany
| | - Rolf Mitzner
- Institute
for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und
Energie GmbH, 12489 Berlin, Germany
| | - Raphael M. Jay
- Institut
für Physik und Astronomie, Universität
Potsdam, 14476 Potsdam, Germany
| | - Annette Pietzsch
- Institute
for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und
Energie GmbH, 12489 Berlin, Germany
| | - Mattis Fondell
- Institute
for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und
Energie GmbH, 12489 Berlin, Germany
| | - Vinícius Vaz da Cruz
- Institute
for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und
Energie GmbH, 12489 Berlin, Germany
| | - Alexander Föhlisch
- Institute
for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und
Energie GmbH, 12489 Berlin, Germany
- Institut
für Physik und Astronomie, Universität
Potsdam, 14476 Potsdam, Germany
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5
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Eckert S, Vaz da Cruz V, Ochmann M, von Ahnen I, Föhlisch A, Huse N. Breaking the Symmetry of Pyrimidine: Solvent Effects and Core-Excited State Dynamics. J Phys Chem Lett 2021; 12:8637-8643. [PMID: 34472857 PMCID: PMC8436212 DOI: 10.1021/acs.jpclett.1c01865] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 08/03/2021] [Indexed: 06/13/2023]
Abstract
Symmetry and its breaking crucially define the chemical properties of molecules and their functionality. Resonant inelastic X-ray scattering is a local electronic structure probe reporting on molecular symmetry and its dynamical breaking within the femtosecond scattering duration. Here, we study pyrimidine, a system from the C2v point group, in an aqueous solution environment, using scattering though its 2a2 resonance. Despite the absence of clean parity selection rules for decay transitions from in-plane orbitals, scattering channels including decay from the 7b2 and 11a1 orbitals with nitrogen lone pair character are a direct probe for molecular symmetry. Computed spectra of explicitly solvated molecules sampled from a molecular dynamics simulation are combined with the results of a quantum dynamical description of the X-ray scattering process. We observe dominant signatures of core-excited Jahn-Teller induced symmetry breaking for resonant excitation. Solvent contributions are separable by shortening of the effective scattering duration through excitation energy detuning.
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Affiliation(s)
- Sebastian Eckert
- Institute
for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und
Energie GmbH, 12489 Berlin, Germany
| | - Vinícius Vaz da Cruz
- Institute
for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und
Energie GmbH, 12489 Berlin, Germany
| | - Miguel Ochmann
- Center
for Free-Electron Laser Science, Institute for Nanostructure and Solid
State Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Inga von Ahnen
- Center
for Free-Electron Laser Science, Institute for Nanostructure and Solid
State Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - Alexander Föhlisch
- Institute
for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und
Energie GmbH, 12489 Berlin, Germany
- Institut
für Physik und Astronomie,Universität
Potsdam, 14476 Potsdam, Germany
| | - Nils Huse
- Center
for Free-Electron Laser Science, Institute for Nanostructure and Solid
State Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
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6
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Ren J, Lin L, Lieutenant K, Schulz C, Wong D, Gimm T, Bande A, Wang X, Petit T. Role of Dopants on the Local Electronic Structure of Polymeric Carbon Nitride Photocatalysts. SMALL METHODS 2021; 5:e2000707. [PMID: 34927893 DOI: 10.1002/smtd.202000707] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 10/02/2020] [Indexed: 06/14/2023]
Abstract
Polymeric carbon nitride (PCN) is a promising class of materials for solar-to-chemical energy conversion. The increase of the photocatalytic activity of PCN is often achieved by the incorporation of heteroatoms, whose impact on the electronic structure of PCN remains poorly explored. This work reveals that the local electronic structure of PCN is strongly altered by doping with sulfur and iron using X-ray absorption spectroscopy (XAS) and resonant inelastic X-ray scattering (RIXS). From XAS at the carbon and nitrogen K-edges, sulfur atoms are found to mostly affect carbon atoms, in contrast to iron doping mostly altering nitrogen sites. In RIXS at the nitrogen K-edge, a vibrational progression, affected by iron doping, is evidenced, which is attributed to a vibronic coupling between excited electrons in nitrogen atoms and C-N stretching modes in PCN heterocycling rings. This work opens new perspectives for the characterization of vibronic coupling in polymeric photocatalysts.
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Affiliation(s)
- Jian Ren
- Institute for Nanospectroscopy, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Straße 15, Berlin, 12489, Germany
- Department of Physics, Freie Universität Berlin, Arnimallee 14, Berlin, 14195, Germany
| | - Lihua Lin
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
| | - Klaus Lieutenant
- Department of Methods for Characterization of Transport Phenomena in Energy Materials, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Straße 15, Berlin, 12489, Germany
| | - Christian Schulz
- Department of Methods for Characterization of Transport Phenomena in Energy Materials, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Straße 15, Berlin, 12489, Germany
| | - Deniz Wong
- Department of Methods for Characterization of Transport Phenomena in Energy Materials, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Straße 15, Berlin, 12489, Germany
| | - Thorren Gimm
- Joint Research Group Simulation of Energy Materials, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, Berlin, 14109, Germany
| | - Annika Bande
- Young Investigator Group Theory of Electron Dynamics and Spectroscopy, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, Berlin, 14109, Germany
| | - Xinchen Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
| | - Tristan Petit
- Institute for Nanospectroscopy, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Albert-Einstein-Straße 15, Berlin, 12489, Germany
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7
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Vaz da Cruz V, Eckert S, Föhlisch A. TD-DFT simulations of K-edge resonant inelastic X-ray scattering within the restricted subspace approximation. Phys Chem Chem Phys 2021; 23:1835-1848. [DOI: 10.1039/d0cp04726k] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Truncation of orbital subspaces in TD-DFT yields an accurate description of RIXS spectra for soft X-ray K-edges.
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Affiliation(s)
- Vinícius Vaz da Cruz
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
- Institute for Methods and Instrumentation for Synchrotron Radiation Research
- 12489 Berlin
- Germany
| | - Sebastian Eckert
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
- Institute for Methods and Instrumentation for Synchrotron Radiation Research
- 12489 Berlin
- Germany
| | - Alexander Föhlisch
- Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
- Institute for Methods and Instrumentation for Synchrotron Radiation Research
- 12489 Berlin
- Germany
- Universität Potsdam
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8
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Rossi M, Arpaia R, Fumagalli R, Moretti Sala M, Betto D, Kummer K, De Luca GM, van den Brink J, Salluzzo M, Brookes NB, Braicovich L, Ghiringhelli G. Experimental Determination of Momentum-Resolved Electron-Phonon Coupling. PHYSICAL REVIEW LETTERS 2019; 123:027001. [PMID: 31386544 DOI: 10.1103/physrevlett.123.027001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Indexed: 06/10/2023]
Abstract
We provide a novel experimental method to quantitatively estimate the electron-phonon coupling and its momentum dependence from resonant inelastic x-ray scattering (RIXS) spectra based on the detuning of the incident photon energy away from an absorption resonance. We apply it to the cuprate parent compound NdBa_{2}Cu_{3}O_{6} and find that the electronic coupling to the oxygen half-breathing phonon branch is strongest at the Brillouin zone boundary, where it amounts to ∼0.17 eV, in agreement with previous studies. In principle, this method is applicable to any absorption resonance suitable for RIXS measurements and will help to define the contribution of lattice vibrations to the peculiar properties of quantum materials.
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Affiliation(s)
- Matteo Rossi
- Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy
| | - Riccardo Arpaia
- Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy
- Department of Microtechnology and Nanoscience, Chalmers University of Technology, SE-41296 Göteborg, Sweden
| | - Roberto Fumagalli
- Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy
| | - Marco Moretti Sala
- Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy
| | - Davide Betto
- ESRF-The European Synchrotron, 71 Avenue des Martyrs, CS 40220, F-38043 Grenoble, France
| | - Kurt Kummer
- ESRF-The European Synchrotron, 71 Avenue des Martyrs, CS 40220, F-38043 Grenoble, France
| | - Gabriella M De Luca
- Dipartimento di Fisica "E. Pancini," Università degli Studi di Napoli "Federico II," Complesso Monte Sant'Angelo-Via Cinthia, I-80126 Napoli, Italy
- CNR-SPIN, Complesso Monte Sant'Angelo-Via Cinthia, I-80126 Napoli, Italy
| | - Jeroen van den Brink
- Institute for Theoretical Solid State Physics, IFW Dresden, Helmholtzstrasse 20, D-01069 Dresden, Germany
- Department of Physics, Technical University Dresden, D-01062 Dresden, Germany
| | - Marco Salluzzo
- CNR-SPIN, Complesso Monte Sant'Angelo-Via Cinthia, I-80126 Napoli, Italy
| | - Nicholas B Brookes
- ESRF-The European Synchrotron, 71 Avenue des Martyrs, CS 40220, F-38043 Grenoble, France
| | - Lucio Braicovich
- Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy
- ESRF-The European Synchrotron, 71 Avenue des Martyrs, CS 40220, F-38043 Grenoble, France
| | - Giacomo Ghiringhelli
- Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy
- CNR-SPIN, Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy
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9
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Niskanen J, Kooser K, Koskelo J, Käämbre T, Kunnus K, Pietzsch A, Quevedo W, Hakala M, Föhlisch A, Huotari S, Kukk E. Density functional simulation of resonant inelastic X-ray scattering experiments in liquids: acetonitrile. Phys Chem Chem Phys 2018; 18:26026-26032. [PMID: 27711595 DOI: 10.1039/c6cp03220f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper we report an experimental and computational study of liquid acetonitrile (H3C-C[triple bond, length as m-dash]N) by resonant inelastic X-ray scattering (RIXS) at the N K-edge. The experimental spectra exhibit clear signatures of the electronic structure of the valence states at the N site and incident-beam-polarization dependence is observed as well. Moreover, we find fine structure in the quasielastic line that is assigned to finite scattering duration and nuclear relaxation. We present a simple and light-to-evaluate model for the RIXS maps and analyze the experimental data using this model combined with ab initio molecular dynamics simulations. In addition to polarization-dependence and scattering-duration effects, we pinpoint the effects of different types of chemical bonding to the RIXS spectrum and conclude that the H2C-C[double bond, length as m-dash]NH isomer, suggested in the literature, does not exist in detectable quantities. We study solution effects on the scattering spectra with simulations in liquid and in vacuum. The presented model for RIXS proved to be light enough to allow phase-space-sampling and still accurate enough for identification of transition lines in physical chemistry research by RIXS.
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Affiliation(s)
- Johannes Niskanen
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin for Materials and Energy, Albert-Einstein-Str 15, D-12489, Berlin, Germany. and Department of Physics, University of Helsinki, Gustav Hällströmin katu 2a, FI-00014, Helsinki, Finland
| | - Kuno Kooser
- Department of Physics and Astronomy, University of Turku, Vesilinnantie 5, FI-20014 Turku, Finland and Institute of Physics, University of Tartu, W. Ostwaldi 1, EE-50411 Tartu, Estonia
| | - Jaakko Koskelo
- Department of Physics, University of Helsinki, Gustav Hällströmin katu 2a, FI-00014, Helsinki, Finland
| | - Tanel Käämbre
- Institute of Physics, University of Tartu, W. Ostwaldi 1, EE-50411 Tartu, Estonia
| | - Kristjan Kunnus
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin for Materials and Energy, Albert-Einstein-Str 15, D-12489, Berlin, Germany. and Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24/25, D-14476 Potsdam, Germany
| | - Annette Pietzsch
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin for Materials and Energy, Albert-Einstein-Str 15, D-12489, Berlin, Germany.
| | - Wilson Quevedo
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin for Materials and Energy, Albert-Einstein-Str 15, D-12489, Berlin, Germany.
| | - Mikko Hakala
- Department of Physics, University of Helsinki, Gustav Hällströmin katu 2a, FI-00014, Helsinki, Finland
| | - Alexander Föhlisch
- Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin for Materials and Energy, Albert-Einstein-Str 15, D-12489, Berlin, Germany. and Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24/25, D-14476 Potsdam, Germany
| | - Simo Huotari
- Department of Physics, University of Helsinki, Gustav Hällströmin katu 2a, FI-00014, Helsinki, Finland
| | - Edwin Kukk
- Department of Physics and Astronomy, University of Turku, Vesilinnantie 5, FI-20014 Turku, Finland
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10
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Couto RC, Guarise M, Nicolaou A, Jaouen N, Chiuzbăian GS, Lüning J, Ekholm V, Rubensson JE, Såthe C, Hennies F, Kimberg V, Guimarães FF, Agren H, Gel'mukhanov F, Journel L, Simon M. Anomalously strong two-electron one-photon X-ray decay transitions in CO caused by avoided crossing. Sci Rep 2016; 6:20947. [PMID: 26860458 PMCID: PMC4748233 DOI: 10.1038/srep20947] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 01/13/2016] [Indexed: 02/08/2023] Open
Abstract
The unique opportunity to study and control electron-nuclear quantum dynamics in coupled potentials offered by the resonant inelastic X-ray scattering (RIXS) technique is utilized to unravel an anomalously strong two-electron one-photon transition from core-excited to Rydberg final states in the CO molecule. High-resolution RIXS measurements of CO in the energy region of 12–14 eV are presented and analyzed by means of quantum simulations using the wave packet propagation formalism and ab initio calculations of potential energy curves and transition dipole moments. The very good overall agreement between the experimental results and the theoretical predictions allows an in-depth interpretation of the salient spectral features in terms of Coulomb mixing of “dark” with “bright” final states leading to an effective two-electron one-photon transition. The present work illustrates that the improved spectral resolution of RIXS spectra achievable today may call for more advanced theories than what has been used in the past.
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Affiliation(s)
- Rafael C Couto
- Theoretical Chemistry &Biology, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden.,Instituto de Química, Universidade Federal Goiás, Campus Samambaia, CP 131, 74001-970 Goiânia, Goiás, Brazil
| | - Marco Guarise
- Laboratorio Nacional Luz Sincrotron, 10000 Campinas, Brazil.,Sorbonne Universités, UPMC Univ Paris 6, UMR7614, Laboratoire de Chimie Physique - Matière et Rayonnement, F-75005 Paris, France
| | - Alessandro Nicolaou
- Synchrotron SOLEIL, l'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France
| | - Nicolas Jaouen
- Synchrotron SOLEIL, l'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France
| | - Gheorghe S Chiuzbăian
- Sorbonne Universités, UPMC Univ Paris 6, UMR7614, Laboratoire de Chimie Physique - Matière et Rayonnement, F-75005 Paris, France
| | - Jan Lüning
- Sorbonne Universités, UPMC Univ Paris 6, UMR7614, Laboratoire de Chimie Physique - Matière et Rayonnement, F-75005 Paris, France
| | - Victor Ekholm
- Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden
| | - Jan-Erik Rubensson
- Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden
| | - Conny Såthe
- MAX IV Laboratory, Lund University, Box 118, 221 00 Lund, Sweden
| | - Franz Hennies
- MAX IV Laboratory, Lund University, Box 118, 221 00 Lund, Sweden
| | - Victor Kimberg
- Theoretical Chemistry &Biology, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden
| | - Freddy F Guimarães
- Instituto de Química, Universidade Federal Goiás, Campus Samambaia, CP 131, 74001-970 Goiânia, Goiás, Brazil
| | - Hans Agren
- Theoretical Chemistry &Biology, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden
| | - Faris Gel'mukhanov
- Theoretical Chemistry &Biology, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden
| | - Loïc Journel
- Sorbonne Universités, UPMC Univ Paris 6, UMR7614, Laboratoire de Chimie Physique - Matière et Rayonnement, F-75005 Paris, France
| | - Marc Simon
- Sorbonne Universités, UPMC Univ Paris 6, UMR7614, Laboratoire de Chimie Physique - Matière et Rayonnement, F-75005 Paris, France
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11
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Liu X, Yang W, Liu Z. Recent progress on synchrotron-based in-situ soft X-ray spectroscopy for energy materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:7710-29. [PMID: 24799004 DOI: 10.1002/adma.201304676] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 01/22/2014] [Indexed: 05/22/2023]
Abstract
Soft X-ray spectroscopy (SXS) techniques such as photoelectron spectroscopy, soft X-ray absorption spectroscopy and X-ray emission spectroscopy are efficient and direct tools to probe electronic structures of materials. Traditionally, these surface sensitive soft X-ray techniques that detect electrons or photons require high vacuum to operate. Many recent in situ instrument developments of these techniques have overcome this vacuum barrier. One can now study many materials and model devices under near ambient, semi-realistic, and operando conditions. Further developments of integrating the realistic sample environments with efficient and high resolution detection methods, particularly at the high brightness synchrotron light sources, are making SXS an important tool for the energy research community. In this progress report, we briefly describe the basic concept of several SXS techniques and discuss recent development of SXS instruments. We then present several recent studies, mostly in situ SXS experiments, on energy materials and devices. Using these studies, we would like to highlight that the integration of SXS and in situ environments can provide in-depth insight of material's functionality and help researchers in new energy material developments. The remaining challenges and critical research directions are discussed at the end.
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Affiliation(s)
- Xiaosong Liu
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China; Advanced Light Source Division, Lawrence Berkley National Laboratory, Berkeley, CA, 94720, USA
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12
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Bisogni V, Kourtis S, Monney C, Zhou K, Kraus R, Sekar C, Strocov V, Büchner B, van den Brink J, Braicovich L, Schmitt T, Daghofer M, Geck J. Femtosecond dynamics of momentum-dependent magnetic excitations from resonant inelastic X-ray scattering in CaCu2O3. PHYSICAL REVIEW LETTERS 2014; 112:147401. [PMID: 24766010 DOI: 10.1103/physrevlett.112.147401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Indexed: 06/03/2023]
Abstract
Taking spinon excitations in the quantum antiferromagnet CaCu2O3 as an example, we demonstrate that femtosecond dynamics of magnetic electronic excitations can be probed by direct resonant inelastic x-ray scattering (RIXS). To this end, we isolate the contributions of single and double spin-flip excitations in experimental RIXS spectra, identify the physical mechanisms that cause them, and determine their respective time scales. By comparing theory and experiment, we find that double spin flips need a finite amount of time to be generated, rendering them sensitive to the core-hole lifetime, whereas single spin flips are, to a very good approximation, independent of it. This shows that RIXS can grant access to time-domain dynamics of excitations and illustrates how RIXS experiments can distinguish between excitations in correlated electron systems based on their different time dependence.
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Affiliation(s)
- Valentina Bisogni
- Leibniz Institute for Solid State and Materials Research IFW Dresden, 01069 Dresden, Germany and Research Department Synchrotron Radiation and Nanotechnology, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - Stefanos Kourtis
- Leibniz Institute for Solid State and Materials Research IFW Dresden, 01069 Dresden, Germany
| | - Claude Monney
- Research Department Synchrotron Radiation and Nanotechnology, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland and Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - Kejin Zhou
- Research Department Synchrotron Radiation and Nanotechnology, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - Roberto Kraus
- Leibniz Institute for Solid State and Materials Research IFW Dresden, 01069 Dresden, Germany
| | - Chinnathambi Sekar
- Leibniz Institute for Solid State and Materials Research IFW Dresden, 01069 Dresden, Germany
| | - Vladimir Strocov
- Research Department Synchrotron Radiation and Nanotechnology, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - Bernd Büchner
- Leibniz Institute for Solid State and Materials Research IFW Dresden, 01069 Dresden, Germany and Department of Physics, Technical University Dresden, D-1062 Dresden, Germany
| | - Jeroen van den Brink
- Leibniz Institute for Solid State and Materials Research IFW Dresden, 01069 Dresden, Germany and Department of Physics, Technical University Dresden, D-1062 Dresden, Germany
| | - Lucio Braicovich
- CNR/SPIN, CNISM, and Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Thorsten Schmitt
- Research Department Synchrotron Radiation and Nanotechnology, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - Maria Daghofer
- Leibniz Institute for Solid State and Materials Research IFW Dresden, 01069 Dresden, Germany
| | - Jochen Geck
- Leibniz Institute for Solid State and Materials Research IFW Dresden, 01069 Dresden, Germany
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13
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Harada Y, Tokushima T, Horikawa Y, Takahashi O, Niwa H, Kobayashi M, Oshima M, Senba Y, Ohashi H, Wikfeldt KT, Nilsson A, Pettersson LGM, Shin S. Selective probing of the OH or OD stretch vibration in liquid water using resonant inelastic soft-x-ray scattering. PHYSICAL REVIEW LETTERS 2013; 111:193001. [PMID: 24266469 DOI: 10.1103/physrevlett.111.193001] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2012] [Indexed: 05/22/2023]
Abstract
High-resolution O 1s resonant inelastic x-ray scattering spectra of liquid H2O, D2O, and HDO, obtained by excitation near the preedge resonance show, in the elastic line region, well-separated multiple vibrational structures corresponding to the internal OH stretch vibration in the ground state of water. The energy of the first-order vibrational excitation is strongly blueshifted with respect to the main band in the infrared or Raman spectra of water, indicating that water molecules with a highly weakened or broken donating hydrogen bond are correlated with the preedge structure in the x-ray absorption spectrum. The vibrational profile of preedge excited HDO water is well fitted with 50%±20% greater OH-stretch contribution compared to OD, which strongly supports a preference for OH being the weakened or broken H-bond in agreement with the well-known picture that D2O makes stronger H-bonds than H2O. Accompanying path-integral molecular dynamics simulations show that this is particularly the case for strongly asymmetrically H-bonded molecules, i.e., those that are selected by preedge excitation.
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Affiliation(s)
- Yoshihisa Harada
- Institute for Solid State Physics (ISSP), University of Tokyo, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan and Synchrotron Radiation Research Organization, University of Tokyo, Sayo-cho, Sayo, Hyogo 679-5198, Japan
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14
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Kivimäki A, Alagia M, Richter R. X-ray emission–photoion coincidence spectroscopy of the CO2 molecule at the O 1s edge. Chem Phys Lett 2012. [DOI: 10.1016/j.cplett.2012.02.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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15
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Mohammed A, Sun YP, Miao Q, Ågren H, Gel'mukhanov F. Raman Scattering at Resonant or Near-Resonant Conditions: A Generalized Short-Time Approximation. CHINESE J CHEM PHYS 2012. [DOI: 10.1088/1674-0068/25/01/31-47] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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17
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18
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Pietzsch A, Sun YP, Hennies F, Rinkevicius Z, Karlsson HO, Schmitt T, Strocov VN, Andersson J, Kennedy B, Schlappa J, Föhlisch A, Rubensson JE, Gel'mukhanov F. Spatial quantum beats in vibrational resonant inelastic soft x-ray scattering at dissociating states in oxygen. PHYSICAL REVIEW LETTERS 2011; 106:153004. [PMID: 21568552 DOI: 10.1103/physrevlett.106.153004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Indexed: 05/24/2023]
Abstract
Resonant inelastic soft x-ray scattering (RIXS) spectra excited at the 1σ(g) → 3σ(u) resonance in gas-phase O2 show excitations due to the nuclear degrees of freedom with up to 35 well-resolved discrete vibronic states and a continuum due to the kinetic energy distribution of the separated atoms. The RIXS profile demonstrates spatial quantum beats caused by two interfering wave packets with different momenta as the atoms separate. Thomson scattering strongly affects both the spectral profile and the scattering anisotropy.
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Affiliation(s)
- A Pietzsch
- MAX-lab, Lund University, Box 118, S-221 00 Lund, Sweden
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19
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Marchenko T, Journel L, Marin T, Guillemin R, Carniato S, Žitnik M, Kavčič M, Bučar K, Mihelič A, Hoszowska J, Cao W, Simon M. Resonant inelastic x-ray scattering at the limit of subfemtosecond natural lifetime. J Chem Phys 2011; 134:144308. [DOI: 10.1063/1.3575514] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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20
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Liu JC, Nicolas C, Sun YP, Flammini R, O’Keeffe P, Avaldi L, Morin P, Kimberg V, Kosugi N, Gel’mukhanov F, Miron C. Multimode Resonant Auger Scattering from the Ethene Molecule. J Phys Chem B 2010; 115:5103-12. [DOI: 10.1021/jp104228x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ji-Cai Liu
- Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden
- Mathematics and Physics Department, North China Electric Power University, 102206 Beijing, China
| | - Christophe Nicolas
- Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France
| | - Yu-Ping Sun
- Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden
- College of Physics and Electronics, Shandong Normal University, 250014 Jinan, China
| | - Roberto Flammini
- CNR-IMIP, Istituto di Metodologie Inorganiche e dei Plasmi, Area della Ricerca di Roma I, Via Salaria km 29.300, 00019 Monterotondo Scalo (RM), Italy
| | - Patrick O’Keeffe
- CNR-IMIP, Istituto di Metodologie Inorganiche e dei Plasmi, Area della Ricerca di Roma I, Via Salaria km 29.300, 00019 Monterotondo Scalo (RM), Italy
| | - Lorenzo Avaldi
- CNR-IMIP, Istituto di Metodologie Inorganiche e dei Plasmi, Area della Ricerca di Roma I, Via Salaria km 29.300, 00019 Monterotondo Scalo (RM), Italy
| | - Paul Morin
- Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France
| | - Victor Kimberg
- Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France
| | | | - Faris Gel’mukhanov
- Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden
| | - Catalin Miron
- Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France
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21
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Oura M, Takahashi O, Gejo T, Tokushima T, Horikawa Y, Senba Y, Ohashi H, Shin S. Vibrationally resolved resonant x-ray emission spectra of diatomic molecules. ACTA ACUST UNITED AC 2010. [DOI: 10.1088/1742-6596/235/1/012016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Hennies F, Pietzsch A, Berglund M, Föhlisch A, Schmitt T, Strocov V, Karlsson HO, Andersson J, Rubensson JE. Resonant inelastic scattering spectra of free molecules with vibrational resolution. PHYSICAL REVIEW LETTERS 2010; 104:193002. [PMID: 20866962 DOI: 10.1103/physrevlett.104.193002] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2010] [Indexed: 05/24/2023]
Abstract
Inelastic x-ray scattering spectra excited at the 1s(-1)π* resonance of gas phase O2 have been recorded with an overall energy resolution that allows for well-resolved vibrational progressions. The nuclear wave packet dynamics in the intermediate state is reflected in vibrational excitations of the electronic ground state, and by fine-tuning the excitation energy the dissociation dynamics in the predissociative B'(3)Πg final state is controlled.
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23
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Feifel R, Velkov Y, Carravetta V, Angeli C, Cimiraglia R, Sałek P, Gel'mukhanov F, Sorensen SL, Piancaśtelli MN, De Fanis A, Okada K, Kitajima M, Tanaka T, Tanaka H, Ueda K. X-ray absorption and resonant Auger spectroscopy of O2 in the vicinity of the O 1s-->sigma* resonance: experiment and theory. J Chem Phys 2008; 128:064304. [PMID: 18282035 DOI: 10.1063/1.2831920] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We report on an experimental and theoretical investigation of x-ray absorption and resonant Auger electron spectra of gas phase O(2) recorded in the vicinity of the O 1s-->sigma(*) excitation region. Our investigation shows that core excitation takes place in a region with multiple crossings of potential energy curves of the excited states. We find a complete breakdown of the diabatic picture for this part of the x-ray absorption spectrum, which allows us to assign an hitherto unexplained fine structure in this spectral region. The experimental Auger data reveal an extended vibrational progression, for the outermost singly ionized X (2)Pi(g) final state, which exhibits strong changes in spectral shape within a short range of photon energy detuning (0 eV>Omega>-0.7 eV). To explain the experimental resonant Auger electron spectra, we use a mixed adiabatic/diabatic picture selecting crossing points according to the strength of the electronic coupling. Reasonable agreement is found between experiment and theory even though the nonadiabatic couplings are neglected. The resonant Auger electron scattering, which is essentially due to decay from dissociative core-excited states, is accompanied by strong lifetime-vibrational and intermediate electronic state interferences as well as an interference with the direct photoionization channel. The overall agreement between the experimental Auger spectra and the calculated spectra supports the mixed diabatic/adiabatic picture.
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Affiliation(s)
- R Feifel
- Department of Physics, Uppsala University, Box 530, S-751 21 Uppsala, Sweden.
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24
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Braicovich L, Ghiringhelli G, Tagliaferri A, van der Laan G, Annese E, Brookes NB. Femtosecond dynamics in ferromagnetic metals investigated with soft x-ray resonant emission. PHYSICAL REVIEW LETTERS 2005; 95:267402. [PMID: 16486402 DOI: 10.1103/physrevlett.95.267402] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2005] [Indexed: 05/06/2023]
Abstract
We present measurements of the magnetic circular dichroism in x-ray resonant emission in the perpendicular geometry (circularly polarized x rays at normal incidence to the magnetization) for L(2,3) the absorption region in Fe, Co, and Ni metal. The results show that spin-dependent screening of the core hole takes place within the scattering time scale, which is supported by the absence of the effect in ionic systems. This allows an assessment of the time scale for the screening process (up to a few femtoseconds). The process is almost complete within the scattering time for Fe and Co, but this is not the case for the narrow band metal Ni which shows a much slower dynamics.
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Affiliation(s)
- L Braicovich
- INFM-CNR, Dipartimento di Fisica, Politecnico di Milano, piazza Leonardo da Vinci 32, Milano, Italy
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25
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Rolles D, Braune M, Cvejanović S, Gessner O, Hentges R, Korica S, Langer B, Lischke T, Prümper G, Reinköster A, Viefhaus J, Zimmermann B, McKoy V, Becker U. Isotope-induced partial localization of core electrons in the homonuclear molecule N2. Nature 2005; 437:711-5. [PMID: 16193047 DOI: 10.1038/nature04040] [Citation(s) in RCA: 148] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2005] [Accepted: 07/11/2005] [Indexed: 11/08/2022]
Abstract
Because of inversion symmetry and particle exchange, all constituents of homonuclear diatomic molecules are in a quantum mechanically non-local coherent state; this includes the nuclei and deep-lying core electrons. Hence, the molecular photoemission can be regarded as a natural double-slit experiment: coherent electron emission originates from two identical sites, and should give rise to characteristic interference patterns. However, the quantum coherence is obscured if the two possible symmetry states of the electronic wavefunction ('gerade' and 'ungerade') are degenerate; the sum of the two exactly resembles the distinguishable, incoherent emission from two localized core sites. Here we observe the coherence of core electrons in N(2) through a direct measurement of the interference exhibited in their emission. We also explore the gradual transition to a symmetry-broken system of localized electrons by comparing different isotope-substituted species--a phenomenon analogous to the acquisition of partial 'which-way' information in macroscopic double-slit experiments.
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Affiliation(s)
- Daniel Rolles
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, 14195 Berlin, Germany
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26
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Hennies F, Polyutov S, Minkov I, Pietzsch A, Nagasono M, Gel'mukhanov F, Triguero L, Piancastelli MN, Wurth W, Agren H, Föhlisch A. Nonadiabatic effects in resonant inelastic x-ray scattering. PHYSICAL REVIEW LETTERS 2005; 95:163002. [PMID: 16241792 DOI: 10.1103/physrevlett.95.163002] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2005] [Indexed: 05/05/2023]
Abstract
We have studied the spectral features of resonant inelastic x-ray scattering of condensed ethylene with vibrational selectivity both experimentally and theoretically. Purely vibrational spectral loss features and coupled electronic and vibrational losses are observed. The one-step theory for resonant soft x-ray scattering is applied, taking multiple vibrational modes and vibronic coupling into account. Our investigation of ethylene underlines that the assignment of spectral features observed in resonant inelastic x-ray scattering of polyatomic systems requires an explicit description of the coupled electronic and vibrational loss features.
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Affiliation(s)
- F Hennies
- Institut für Experimentalphysik, Universität Hamburg, Germany
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27
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Canton S, Kukk E, Bozek J, Cubaynes D, Berrah N. Imaging wavepacket interferences using Auger resonant Raman spectroscopy. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2004.12.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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28
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Minkov I, Gel'mukhanov F, Friedlein R, Osikowicz W, Suess C, Ohrwall G, Sorensen SL, Braun S, Murdey R, Salaneck WR, Agren H. Core excitations of naphthalene: Vibrational structure versus chemical shifts. J Chem Phys 2004; 121:5733-9. [PMID: 15366997 DOI: 10.1063/1.1784450] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
High-resolution x-ray photoelectron emission (XPS) and near-edge x-ray absorption fine structure (NEXAFS) spectra of naphthalene are analyzed in terms of the initial state chemical shifts and the vibrational fine structure of the excitations. Carbon atoms located at peripheral sites experience only a small chemical shift and exhibit rather similar charge-vibrational coupling, while the atoms in the bridging positions differ substantially. In the XPS spectra, C-H stretching modes provide important contributions to the overall shape of the spectrum. In contrast, the NEXAFS spectrum contains only vibrational progressions from particular C-C stretching modes. The accuracy of ab initio calculations of absolute electronic transition energies is discussed in the context of minute chemical shifts, the vibrational fine structure, and the state multiplicity.
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Affiliation(s)
- I Minkov
- Royal Institute of Technology, S-106 91 Stockholm, Sweden
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29
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Nyberg M, Odelius M, Nilsson A, Pettersson LGM. Hydrogen bonding between adsorbed deprotonated glycine molecules on Cu(110). J Chem Phys 2003. [DOI: 10.1063/1.1625640] [Citation(s) in RCA: 99] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Guo JH, Luo Y, Augustsson A, Rubensson JE, Såthe C, Agren H, Siegbahn H, Nordgren J. X-ray emission spectroscopy of hydrogen bonding and electronic structure of liquid water. PHYSICAL REVIEW LETTERS 2002; 89:137402. [PMID: 12225062 DOI: 10.1103/physrevlett.89.137402] [Citation(s) in RCA: 111] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2002] [Indexed: 05/23/2023]
Abstract
We use x-ray emission spectroscopy to examine the influence of the intermolecular interaction on the local electronic structure of liquid water. By comparing x-ray emission spectra of the water molecule and liquid water, we find a strong involvement of the a(1)-symmetry valence-orbital in the hydrogen bonding. The local electronic structure of water molecules, where one hydrogen bond is broken at the hydrogen site, is separately determined. Our results provide an illustration of the important potential of x-ray emission spectroscopy for elucidating basic features of liquids.
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Affiliation(s)
- J-H Guo
- Department of Physics, Uppsala University, Box 530, SE-751 21 Uppsala, Sweden.
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32
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Gel’mukhanov F, Sałek P, Shalagin A, Ågren H. X-ray Raman scattering under pulsed excitation. J Chem Phys 2000. [DOI: 10.1063/1.481134] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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33
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Guo JH, Magnuson M, Såthe C, Nordgren J, Yang L, Luo Y, Ågren H, Xing KZ, Johansson N, Salaneck WR, Daik R, Feast WJ. Resonant and nonresonant x-ray scattering spectra of some poly(phenylenevinylene)s. J Chem Phys 1998. [DOI: 10.1063/1.476011] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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34
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35
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Cesar A, Gel’mukhanov F, Luo Y, Ågren H, Skytt P, Glans P, Guo J, Gunnelin K, Nordgren J. Resonant x-ray scattering beyond the Born–Oppenheimer approximation: Symmetry breaking in the oxygen resonant x-ray emission spectrum of carbon dioxide. J Chem Phys 1997. [DOI: 10.1063/1.474111] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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