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  Localized Excited Charge Carriers Generate Ultrafast Inhomogeneous Strain in the Multiferroic BiFeO3

Schick, D., Herzog, M., Wen, H., Chen, P., Adamo, C., Gaal, P., et al. (2014). Localized Excited Charge Carriers Generate Ultrafast Inhomogeneous Strain in the Multiferroic BiFeO3. Physical Review Letters, 112(9): 097602. doi:10.1103/PhysRevLett.112.097602.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0018-BA78-D Version Permalink: https://hdl.handle.net/11858/00-001M-0000-0018-BA7C-5
Genre: Journal Article

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PhysRevLett.112.097602.pdf (Publisher version), 357KB
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 Creators:
Schick, Daniel1, Author
Herzog, Marc1, 2, Author           
Wen, Haidan3, Author
Chen, Pice4, Author
Adamo, Carolina5, 6, Author
Gaal, Peter7, Author
Schlom, Darrell G.5, 8, Author
Evans, Paul G.4, Author
Li, Yuelin3, Author
Bargheer, Matias1, 7, Author
Affiliations:
1Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany, ou_persistent22              
2Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
3X-Ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA, ou_persistent22              
4Department of Materials Science and Engineering and Materials Science Program, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA, ou_persistent22              
5Department of Material Science and Engineering, Cornell University, Ithaca, New York 14853, USA, ou_persistent22              
6Department of Applied Physics, Stanford University, Stanford, California 94305-4045, USA, ou_persistent22              
7Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Wilhelm-Conrad-Röntgen Campus, BESSY II, Albert-Einstein-Straße 15, 12489 Berlin, Germany, ou_persistent22              
8Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14853, USA, ou_persistent22              

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 Abstract: We apply ultrafast x-ray diffraction with femtosecond temporal resolution to monitor the lattice dynamics in a thin film of multiferroic BiFeO3 after above-band-gap photoexcitation. The sound-velocity limited evolution of the observed lattice strains indicates a quasi-instantaneous photoinduced stress which decays on a nanosecond time scale. This stress exhibits an inhomogeneous spatial profile evidenced by the broadening of the Bragg peak. These new data require substantial modification of existing models of photogenerated stresses in BiFeO3: the relevant excited charge carriers must remain localized to be consistent with the data.

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Language(s): eng - English
 Dates: 2013-07-312014-03-032014-03-07
 Publication Status: Issued
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.112.097602
 Degree: -

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Title: Physical Review Letters
  Other : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 112 (9) Sequence Number: 097602 Start / End Page: - Identifier: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1