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  Nonlinear Electron-Phonon Coupling in Doped Manganites

Esposito, V., Fechner, M., Mankowsky, R., Lemke, H., Chollet, M., Glownia, J., et al. (2017). Nonlinear Electron-Phonon Coupling in Doped Manganites. Physical Review Letters, 118(24), 247601. doi:10.1103/PhysRevLett.118.247601.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0000-18F0-6 Versions-Permalink: https://hdl.handle.net/21.11116/0000-0004-8FDB-5
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PhysRevLett.118.247601.pdf (Verlagsversion), 399KB
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https://arxiv.org/abs/1612.06192 (Preprint)
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 Urheber:
Esposito, V.1, Autor
Fechner, M.2, 3, Autor           
Mankowsky, R.2, 4, Autor           
Lemke, H.5, 6, Autor
Chollet, M.5, Autor
Glownia, J. M.5, Autor
Nakamura, M.7, Autor
Kawasaki, M.7, 8, Autor
Tokura, Y.7, 8, Autor
Staub, U.1, Autor
Beaud, P.1, 6, Autor
Först, M.2, 4, Autor           
Affiliations:
1wiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland, ou_persistent22              
2Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
3Materials Theory, ETH Zürich, Wolfgang-Pauli-Strasse 27, 8093 Zürich, Switzerland, ou_persistent22              
4Center for Free Electron Laser Science, 22761 Hamburg, Germany, ou_persistent22              
5LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA, ou_persistent22              
6SwissFEL, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland, ou_persistent22              
7RIKEN Center for Emergent Matter Science, Wako 351-0198, Japan, ou_persistent22              
8Department of Applied Physics and Quantum Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan, ou_persistent22              

Inhalt

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Schlagwörter: Anharmonic lattice dynamicsChargeElectron-phonon couplingElectronic structureOptical phononsPhase transitions
 Zusammenfassung: We employ time-resolved resonant x-ray diffraction to study the melting of charge order and the associated insulator-to-metal transition in the doped manganite Pr0.5Ca0.5MnO3 after resonant excitation of a high-frequency infrared-active lattice mode. We find that the charge order reduces promptly and highly nonlinearly as function of excitation fluence. Density-functional theory calculations suggest that direct anharmonic coupling between the excited lattice mode and the electronic structure drives these dynamics, highlighting a new avenue of nonlinear phonon control.

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 Datum: 2016-12-202017-06-152017-06-15
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1103/PhysRevLett.118.247601
arXiv: 1612.06192
 Art des Abschluß: -

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Projektname : This work was supported by the National Centres of Competence in Research (NCCR) Molecular Ultrafast Science and Technology (NCCR Molecular Ultrafast Science and Technology), a research instrument of the Swiss National Science Foundation (SNSF). Use of the Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Contract No. DE-AC02- 76SF00515. M. N. was supported by the Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO).
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Quelle 1

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Titel: Physical Review Letters
  Alternativer Titel : Phys. Rev. Lett.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: American Physical Society
Seiten: - Band / Heft: 118 (24) Artikelnummer: - Start- / Endseite: 247601 Identifikator: -