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  Coherent modulation of the YBa2Cu3O6+x atomic structure by displacive stimulated ionic Raman scattering

Mankowsky, R., Först, M., Loew, T., Porras, J., Keimer, B., & Cavalleri, A. (2015). Coherent modulation of the YBa2Cu3O6+x atomic structure by displacive stimulated ionic Raman scattering. Physical Review B, 91(9): 094308. doi:10.1103/PhysRevB.91.094308.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0026-D0B2-4 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0028-2CEB-2
Genre: Journal Article

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PhysRevB.91.094308.pdf (Publisher version), 656KB
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http://dx.doi.org/10.1103/PhysRevB.91.094308 (Publisher version)
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http://arxiv.org/abs/1505.06127 (Preprint)
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 Creators:
Mankowsky, Roman1, 2, Author           
Först, Michael1, Author           
Loew, Toshinao3, Author           
Porras, J.3, Author
Keimer, Bernhard3, Author           
Cavalleri, Andrea1, 2, 4, Author           
Affiliations:
1Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
2University of Hamburg, 22761 Hamburg, Germany, ou_persistent22              
3Solid State Spectroscopy, Max Planck Institute for Solid State Research, Max Planck Society, ou_persistent22              
4Department of Physics, Clarendon Laboratory, University of Oxford, ou_persistent22              

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Free keywords: PACS numbers: 74.25.Kc, 63.20.kg
 Abstract: We discuss the mechanism of coherent phonon generation by stimulated ionic Raman scattering, a process different from conventional excitation with near visible optical pulses. Ionic Raman scattering is driven by anharmonic coupling between a directly excited infrared-active phonon mode and other Raman modes. We experimentally study the response of YBa2Cu3O6+x to the resonant excitation of apical oxygen motions at 20 THz by midinfrared pulses, which has been shown in the past to enhance the interlayer superconducting coupling. We find coherent oscillations of four totally symmetric (Ag) Raman modes and make a critical assessment of the role of these oscillatory motions in the enhancement of superconductivity.

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Language(s): eng - English
 Dates: 2015-03-122015-02-012015-03-312015-03-01
 Publication Status: Issued
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevB.91.094308
arXiv: 1505.06127
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 91 (9) Sequence Number: 094308 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008