Comparing ultrafast surface and bulk heating using time-resolved electron diffraction

Journal Article · Mon Apr 21 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4872055· OSTI ID:22262544

Streubühr, C.; Kalus, A.; Kammler, M.; Linde, D. von der ^[1]; Ligges, M.; Hanisch-Blicharski, A.; Bovensiepen, U.; Horn-von Hoegen, M. ^[1]

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1. Faculty of Physics, University of Duisburg-Essen, Duisburg 47057 (Germany)

From measurements of the transient Debye-Waller effect in Bismuth, we determine the buildup time of the random atomic motion resulting from the electronic relaxation after short pulse laser excitation. The surface sensitive reflection high energy electron diffraction and transmission electron diffraction yield a time constant of about 12 ps and 3 ps, respectively. The different energy transfer rates indicate relatively weak coupling between bulk and surface vibrational modes.

• OSTI ID: 22262544
• Journal Information: Applied Physics Letters, Vol. 104, Issue 16; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BISMUTH
DEBYE-WALLER FACTOR
ELECTRON DIFFRACTION
ENERGY TRANSFER
EXCITATION
HEATING
SURFACES
TIME RESOLUTION