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Träfflista för sökning "WFRF:(Meyer Lindenberg A) ;lar1:(lu)"

Search: WFRF:(Meyer Lindenberg A) > Lund University

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1.
  • Hillyard, P. B., et al. (author)
  • Carrier-density-dependent lattice stability in InSb
  • 2007
  • In: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 98:12, s. 125501-
  • Journal article (peer-reviewed)abstract
    • The ultrafast decay of the x-ray diffraction intensity following laser excitation of an InSb crystal has been utilized to observe carrier dependent changes in the potential energy surface. For the first time, an abrupt carrier dependent onset for potential energy surface softening and the appearance of accelerated atomic disordering for a very high average carrier density have been observed. Inertial dynamics dominate the early stages of crystal disordering for a wide range of carrier densities between the onset of crystal softening and the appearance of accelerated atomic disordering.
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2.
  • Lindenberg, A. M., et al. (author)
  • X-ray diffuse scattering measurements of nucleation dynamics at femtosecond resolution.
  • 2008
  • In: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 100:13, s. 135502-1-135502-5
  • Journal article (peer-reviewed)abstract
    • Femtosecond time-resolved small and wide angle x-ray diffuse scattering techniques are applied to investigate the ultrafast nucleation processes that occur during the ablation process in semiconducting materials. Following intense optical excitation, a transient liquid state of high compressibility characterized by large-amplitude density fluctuations is observed and the buildup of these fluctuations is measured in real time. Small-angle scattering measurements reveal snapshots of the spontaneous nucleation of nanoscale voids within a metastable liquid and support theoretical predictions of the ablation process.
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