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

作者：Feng ShiQuan; Zhao JianLing; Cheng XinLu^*; Zhang Hong

来源：Journal of Applied Physics, 2013, 114(4): 043519.

DOI：10.1063/1.4816777

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.

• 出版日期2013-7-28
• 单位四川大学