Observation of structural anisotropy and the onset of liquidlike motion during the nonthermal melting of InSb

被引：53

作者：

Gaffney, KJ ^{[1
]}

Lindenberg, AM

Larsson, J

Sokolowski-Tinten, K

Blome, C

Synnergren, O

Sheppard, J

Caleman, C

MacPhee, AG

Weinstein, D

Lowney, DP

Allison, T

Matthews, T

Falcone, RW

Cavalieri, AL

Fritz, DM

Lee, SH

Bucksbaum, PH

Reis, DA

Rudati, J

Macrander, AT

Fuoss, PH

Kao, CC

Siddons, DP

Pahl, R

Moffat, K

Als-Nielsen, J

Duesterer, S

Ischebeck, R

Schlarb, H

Schulte-Schrepping, H

Schneider, J

von der Linde, D

Hignette, O

Sette, F

Chapman, HN

Lee, RW

Hansen, TN

Wark, JS

Bergh, M

Huldt, G

van der Spoel, D

Timneanu, N

Hajdu, J

Akre, RA

Bong, E

Krejcik, P

Arthur, J

Brennan, S

Luening, K

机构：

[1] Stanford Synchrotron Radiat Lab, Menlo Pk, CA 94025 USA

[2] Lund Inst Technol, Dept Phys, S-22100 Lund, Sweden

[3] Inst Opt & Quantenelektron, D-07743 Jena, Germany

[4] Univ Duisburg Gesamthsch, Inst Expt Phys, D-45117 Essen, Germany

[5] DESY, Deutsch Elektronen Synchrotron, D-22607 Hamburg, Germany

[6] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[7] Uppsala Univ, Biomed Ctr, Dept Cell & Mol Biol, SE-75124 Uppsala, Sweden

[8] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[9] Univ Michigan, FOCUS Ctr, Dept Phys, Ann Arbor, MI 48109 USA

[10] Univ Michigan, Appl Phys Program, Ann Arbor, MI 48109 USA

[11] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

[12] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

[13] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[14] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA

[15] Univ Chicago, Consortium Adv Radiat Sources, Chicago, IL 60637 USA

[16] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark

[17] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[18] Lawrence Livermore Natl Lab, Dept Phys, Livermore, CA 94550 USA

[19] Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.95.125701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The melting dynamics of laser excited InSb have been studied with femtosecond x-ray diffraction. These measurements observe the delayed onset of diffusive atomic motion, signaling the appearance of liquidlike dynamics. They also demonstrate that the root-mean-squared displacement in the [111] direction increases faster than in the [110] direction after the first 500 fs. This structural anisotropy indicates that the initially generated fluid differs significantly from the equilibrium liquid.

引用

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