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  Displacive lattice excitation through nonlinear phononics viewed by femtosecond X-ray diffraction

Först, M., Mankowsky, R., Bromberger, H., Fritz, D. M., Lemke, H., Zhu, D., et al. (2013). Displacive lattice excitation through nonlinear phononics viewed by femtosecond X-ray diffraction. Solid State Communications, 169, 24-27. doi:10.1016/j.ssc.2013.06.024.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-8C5F-7 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-1A7D-9
Genre: Journal Article

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http://dx.doi.org/10.1016/j.ssc.2013.06.024 (Publisher version)
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 Creators:
Först, Michael1, Author              
Mankowsky, Roman1, Author              
Bromberger, Hubertus1, Author              
Fritz, D. M.2, Author
Lemke, H.2, Author
Zhu, D.2, Author
Chollet, M.2, Author
Tomioka, Y.3, Author
Tokura, Y.4, Author
Merlin, R.5, Author
Hill , J. P.6, Author
Johnson, S. L.7, Author
Cavalleri, Andrea1, 8, Author              
Affiliations:
1Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, Luruper Chaussee 149, Geb. 99 (CFEL), 22761 Hamburg, DE, ou_1938293              
2Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA, ou_persistent22              
3Correlated Electron Engineering Group, AIST, Tsukuba, Ibaraki 305-8562, Japan, ou_persistent22              
4Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan, ou_persistent22              
5Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA, ou_persistent22              
6Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, USA, ou_persistent22              
7Institute for Quantum Electronics, Physics Department, ETH Zürich, 8093 Zürich, Switzerland, ou_persistent22              
8Department of Physics, University of Oxford, Oxford OX1 3PU, United Kingdom, ou_persistent22              

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Free keywords: Correlated electron systems; Ionic Raman Scattering; Nonlinear phononics; Time-resolved hard X-ray diffraction
 Abstract: The nonlinear lattice dynamics of La0.7Sr0.3MnO3, as initiated by strong mid-infrared femtosecond pulses made resonant with a specific lattice vibration, are measured with ultrafast X-ray diffraction at the LCLS free electron laser. Our experiments show that large amplitude excitation of an infrared-active stretching mode leads also to a displacive motion along the coordinate of a second, anharmonically coupled, Raman mode. This rectification of the vibrational field is described within the framework of the Ionic Raman Scattering theory and explains how direct lattice excitation in the nonlinear regime can induce a structural phase transition.

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Language(s): eng - English
 Dates: 2013-06-242013-06-142013-06-262013-07-042013-09
 Publication Status: Published in print
 Pages: 4
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.ssc.2013.06.024
 Degree: -

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Title: Solid State Communications
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Elsevier B.V.
Pages: - Volume / Issue: 169 Sequence Number: - Start / End Page: 24 - 27 Identifier: ISSN: 0038-1098
CoNE: /journals/resource/954925445695