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  Hot electron injection driven phase transitions

Hada, M., Zhang, D., Casandruc, A., Miller, R. J. D., Hontani, Y., Matsuo, J., et al. (2012). Hot electron injection driven phase transitions. Physical Review B, 86(13): 134101. doi:10.1103/PhysRevB.86.134101.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0028-18D5-2 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-002A-DBE2-A
Genre: Journal Article

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PhysRevB.86.134101.pdf (Publisher version), 704KB
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http://dx.doi.org/10.1103/PhysRevB.86.134101 (Publisher version)
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 Creators:
Hada, Masaki1, 2, Author           
Zhang, Dongfang1, 2, Author           
Casandruc, Albert1, 2, 3, Author           
Miller, R. J. Dwayne1, 2, Author           
Hontani, Yusaku4, Author
Matsuo, Jiro4, Author
Marvel, Robert E.5, Author
Haglund, Jr., Richard F.5, Author
Affiliations:
1Atomically Resolved Structural Dynamics Division, Max Planck Research Department for Structural Dynamics, Department of Physics, University of Hamburg, External Organizations, ou_2173636              
2Center for Free Electron Laser Science, Notkestraße 85, Hamburg 22607, Germany, ou_persistent22              
3International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2266714              
4Quantum Science and Engineering Center, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan, ou_persistent22              
5Department of Physics and Astronomy, Vanderbilt University, 6301 Stevenson Center, Nashville, Tennessee 37235, USA, ou_persistent22              

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Free keywords: PACS numbers: 73.40.−c, 68.35.−p, 78.47.J−
 Abstract: We report on a general mechanism for photo-induced phase transitions. The process relies on the photo-injection of hot electrons from an adjacent metallic layer to trigger the structural dynamics of the materials of interest. This mechanism is demonstrated for the semiconductor-to-metal phase transition of VO2 using a 20 nm Au injection layer. The nature of the phase transition is demonstrated by time-resolved optical transmission measurements, as well as a well defined bias dependence that illustrates that the Au film is the source of nonequilibrium electrons driving the phase transition.

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Language(s): eng - English
 Dates: 2012-09-052012-07-172012-10-012012-10-01
 Publication Status: Issued
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevB.86.134101
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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: 86 (13) Sequence Number: 134101 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008