Observation of Structural Anisotropy and the Onset of Liquidlike Motion During the Nonthermal Melting of InSb

作     者：K. J. Gaffney A. M. Lindenberg J. Larsson K. Sokolowski-Tinten C. Blome O. Synnergren J. Sheppard C. Caleman A. G. MacPhee D. Weinstein D. P. Lowney T. Allison T. Matthews R. W. Falcone A. L. Cavalieri D. M. Fritz S. H. Lee P. H. Bucksbaum D. A. Reis J. Rudati A. T. Macrander P. H. Fuoss C. C. Kao D. P. Siddons R. Pahl K. Moffat J. Als-Nielsen S. Duesterer R. Ischebeck H. Schlarb H. Schulte-Schrepping J. Schneider D. von der Linde O. Hignette F. Sette H. N. Chapman R. W. Lee T. N. Hansen J. S. Wark M. Bergh G. Huldt D. van der Spoel N. Timneanu J. Hajdu R. A. Akre E. Bong P. Krejcik J. Arthur S. Brennan K. Luening J. B. Hastings 

作者机构：Stanford Synchrotron Radiation Laboratory/SLAC Menlo Park California 94025 USA Department of Physics Lund Institute of Technology P.O. Box 118 S-22100 Lund Sweden Institut für Optik und Quantenelektronik Friedrich-Schiller Jena Max-Wien-Platz 1 07743 Jena Germany Institut für Experimentelle Physik Universität Duisburg-Essen D-45117 Essen Germany Deutsches Elektronen-Synchrotron DESY Notkestrasse 85 22607 Hamburg Germany Department of Physics Clarendon Laboratory Parks Road University of Oxford Oxford OX1 3PU United Kingdom Department of Cell and Molecular Biology Biomedical Centre Uppsala University SE-75124 Uppsala Sweden Department of Physics University of California Berkeley California 94720 USA FOCUS Center Departments of Physics and Applied Physics Program University of Michigan Ann Arbor Michigan 48109 USA Max-Planck-Institute of Quantum Optics Hans-Kopfermann-Str. 1 D-85748 Garching Germany Advanced Photon Source Argonne National Laboratory Argonne Illinois 60439 USA Materials Science Division Argonne National Laboratory Argonne Illinois 60439 USA National Synchrotron Light Source Brookhaven National Laboratory Upton New York 11973 USA Consortium for Advanced Radiation Sources The University of Chicago Chicago Illinois 60637 USA Niels Bohr Institute Copenhagen University 2100 Copenhagen Ø Denmark European Synchrotron Radiation Facility 38043 Grenoble Cedex 9 France Physics Department Lawrence Livermore National Laboratory Livermore California 94550 USA Stanford Linear Accelerator Center Menlo Park California 94025 USA 

出 版 物：《Physical Review Letters》 (Phys Rev Lett)

年 卷 期：2005年第95卷第12期

页      面：125701-125701页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：We thank Jin A. Choo for her excellent secretarial assistance. This study was supported by a clinical research grant from the Chong Kun Dang Pharmacy  Seoul  Republic of Korea 

主　　题：Semiconducting indium compounds 

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.