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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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Item Permalink: https://hdl.handle.net/21.11116/0000-0000-18F0-6 Version Permalink: https://hdl.handle.net/21.11116/0000-0004-8FDB-5
Genre: Journal Article

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PhysRevLett.118.247601.pdf (Publisher version), 399KB
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https://arxiv.org/abs/1612.06192 (Preprint)
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https://dx.doi.org/10.1103/PhysRevLett.118.247601 (Publisher version)
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 Creators:
Esposito, V.1, Author
Fechner, M.2, 3, Author           
Mankowsky, R.2, 4, Author           
Lemke, H.5, 6, Author
Chollet, M.5, Author
Glownia, J. M.5, Author
Nakamura, M.7, Author
Kawasaki, M.7, 8, Author
Tokura, Y.7, 8, Author
Staub, U.1, Author
Beaud, P.1, 6, Author
Först, M.2, 4, Author           
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              

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Free keywords: Anharmonic lattice dynamicsChargeElectron-phonon couplingElectronic structureOptical phononsPhase transitions
 Abstract: 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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 Dates: 2016-12-202017-06-152017-06-15
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.118.247601
arXiv: 1612.06192
 Degree: -

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Project name : 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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Title: Physical Review Letters
  Alternative Title : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: American Physical Society
Pages: - Volume / Issue: 118 (24) Sequence Number: - Start / End Page: 247601 Identifier: -