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25 April 2024

» pubmed » pmid16197085

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Observation of structural anisotropy and the onset of liquidlike motion during the nonthermal melting of InSb
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 ;
Date:	16 Sep 2005
Journal:	Phys Rev Lett, 95 (12), 125701
Abstract:	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.
Source:	PubMed, pmid16197085
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