Journal
JOURNAL OF APPLIED PHYSICS
Volume 114, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4816777
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Funding
- National Natural Science Foundation of China (NSAF) [1176020]
- National Natural Science Foundation of China (NSFC) [11074176]
- Research Fund for the Doctoral Program of Higher Education of China [20100181110080]
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In this paper, phonon spectra of InSb at different electronic temperatures are presented. Based on the phonon dispersion relationship, we further perform a theoretical investigation of the thermodynamic properties of InSb under intense laser irradiation. The phonon entropy, phonon heat capacity, and phonon contribution to Helmholtz free energy and internal energy of InSb are calculated as functions of temperature at different electronic temperatures. The abrupt change in the phonon entropy- temperature curve from T-e = 0.75 to 1.0eV provides an indication of InSb undergoing a phase transition from solid to liquid. It can be considered as a collateral evidence of non-thermal melting for InSb under intense electronic excitation effect. (C) 2013 AIP Publishing LLC.
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