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Title: Ab initio calculation of the thermodynamic properties of InSb under intense laser irradiation

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{sub e} = 0.75 to 1.0 eV 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.
Authors:
;  [1] ;  [2] ;  [1] ;  [3]
  1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065 (China)
  2. (China)
  3. College of Physical Science and Technology, Sichuan University, Chengdu 610065 (China)
Publication Date:
OSTI Identifier:
22218258
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 114; Journal Issue: 4; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DENSITY FUNCTIONAL METHOD; DISPERSION RELATIONS; ELECTRONIC STRUCTURE; ENTROPY; EV RANGE; FREE ENERGY; INDIUM ANTIMONIDES; LASER RADIATION; MELTING; PHONONS; SEMICONDUCTOR MATERIALS; SPECIFIC HEAT; TEMPERATURE DEPENDENCE