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  Photoinduced melting of the orbital order in La0.5Sr1.5MnO4 measured with 4-fs laser pulses

Singla, R., Simoncig, A., Först, M., Prabhakaran, D., Cavalieri, A. L., & Cavalleri, A. (2013). Photoinduced melting of the orbital order in La0.5Sr1.5MnO4 measured with 4-fs laser pulses. Physical Review B, 88(7): 075107. doi:10.1103/PhysRevB.88.075107.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-8DCE-7 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0027-B579-B
Genre: Journal Article

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PhysRevB.88.075107.pdf (Publisher version), 711KB
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http://dx.doi.org/10.1103/PhysRevB.88.075107 (Publisher version)
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 Creators:
Singla, R.1, Author           
Simoncig, A.2, Author           
Först, M.1, Author           
Prabhakaran, D.3, Author
Cavalieri, A. L.2, Author           
Cavalleri, A.1, 3, 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              
2Extreme Timescales, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938294              
3Department of Physics, Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, United Kingdom, ou_persistent22              

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Free keywords: PACS numbers: 71.27.+a, 78.47.J−
 Abstract: By measuring time-dependent optical birefringence with 4-femtosecond (fs) laser pulses, we determine the time scale for photoinduced melting of orbital order in the single-layer manganite La0.5Sr1.5MnO4. Such high time resolution is required to distinguish atomic motions that control the Jahn-Teller distortion from even faster electronic rearrangements. The experiment reveals an 18 fs bottleneck for the loss of orbital order, corresponding to about one-quarter period of the in-plane Jahn-Teller mode. Furthermore, we observe coherent oscillations of this Jahn-Teller mode. Both their amplitude and the birefringence drop exhibit a threshold in their fluence dependence, indicating cooperativity in the lattice response.

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Language(s): eng - English
 Dates: 2013-05-162013-08-052013-08-15
 Publication Status: Issued
 Pages: 4
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevB.88.075107
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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: 88 (7) Sequence Number: 075107 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008