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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
  • Stanford Synchrotron Radiation Lightsource
  • Lund University
  • Friedrich Schiller University Jena
  • University of Duisburg-Essen
  • German Electron Synchrotron
  • University of Oxford
  • Uppsala University
  • University of California at Berkeley
  • University of Michigan, Ann Arbor
  • Max Planck Institute of Quantum Optics
  • United States Department of Energy
  • Argonne National Laboratory
  • Brookhaven National Laboratory
  • The University of Chicago
  • University of Copenhagen
  • European Synchrotron Radiation Facility
  • Lawrence Livermore National Laboratory
  • SLAC National Accelerator Laboratory

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

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.

Original languageEnglish
Article number125701
JournalPhysical Review Letters
Volume95
Issue number12
DOIs
StatePublished - Sep 16 2005

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