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Large acoustic transients induced by non-thermal melting of InSb

Enquist, Henrik LU ; Allaf Navirian, Hengameh LU ; Hansen, Tue LU ; Lindenberg, A.M.; Sondhauss, Peter LU ; Synnergren, Ola LU ; Wark, J.S. and Larsson, Jörgen LU (2007) In Physical Review Letters 98.
Abstract
We have observed large-amplitude strain waves following a rapid change in density of InSb due to nonthermal melting. The strain has been measured in real time via time-resolved x-ray diffraction, with a temporal resolution better than 2 ps. The change from the solid to liquid density of the surface layer launches a high-amplitude strain wave into the crystalline material below. This induces an effective plane rotation in the asymmetrically cut crystal leading to deflection of the diffracted beam. The uniform strain in the layer below the molten layer is 2.0(±0.2)%. A strain of this magnitude develops within 5 ps of the incident pulse showing that the liquid has reached the equilibrium density within this time frame. Both the strain... (More)
We have observed large-amplitude strain waves following a rapid change in density of InSb due to nonthermal melting. The strain has been measured in real time via time-resolved x-ray diffraction, with a temporal resolution better than 2 ps. The change from the solid to liquid density of the surface layer launches a high-amplitude strain wave into the crystalline material below. This induces an effective plane rotation in the asymmetrically cut crystal leading to deflection of the diffracted beam. The uniform strain in the layer below the molten layer is 2.0(±0.2)%. A strain of this magnitude develops within 5 ps of the incident pulse showing that the liquid has reached the equilibrium density within this time frame. Both the strain amplitude and the depth of the strained material in the solid can be explained by assuming a reduction in the speed of sound in the nonequilibrium liquid compared to measured equilibrium values. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
98
publisher
American Physical Society
external identifiers
  • wos:000246910100037
  • scopus:34547288306
ISSN
1079-7114
DOI
10.1103/PhysRevLett.98.225502
language
English
LU publication?
yes
id
5cf7c258-8385-48a7-ba2c-a7016a1befd4 (old id 701681)
date added to LUP
2007-12-07 14:55:09
date last changed
2017-07-30 05:04:14
@article{5cf7c258-8385-48a7-ba2c-a7016a1befd4,
  abstract     = {We have observed large-amplitude strain waves following a rapid change in density of InSb due to nonthermal melting. The strain has been measured in real time via time-resolved x-ray diffraction, with a temporal resolution better than 2 ps. The change from the solid to liquid density of the surface layer launches a high-amplitude strain wave into the crystalline material below. This induces an effective plane rotation in the asymmetrically cut crystal leading to deflection of the diffracted beam. The uniform strain in the layer below the molten layer is 2.0(±0.2)%. A strain of this magnitude develops within 5 ps of the incident pulse showing that the liquid has reached the equilibrium density within this time frame. Both the strain amplitude and the depth of the strained material in the solid can be explained by assuming a reduction in the speed of sound in the nonequilibrium liquid compared to measured equilibrium values.},
  articleno    = {225502},
  author       = {Enquist, Henrik and Allaf Navirian, Hengameh and Hansen, Tue and Lindenberg, A.M. and Sondhauss, Peter and Synnergren, Ola and Wark, J.S. and Larsson, Jörgen},
  issn         = {1079-7114},
  language     = {eng},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Large acoustic transients induced by non-thermal melting of InSb},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.98.225502},
  volume       = {98},
  year         = {2007},
}