title: Structure change of liquid GaSb under pressure: an ab initio molecular-dynamics simulation.
abstract: We have performed ab initio molecular-dynamics simulation of liquid GaSb (l-GaSb) up to 20.0 GPa. The calculated structure factors are consistent with the recent experimental results, and the partial structure parameters show that the structure of l-GaSb under pressure contracts nonuniformly. In the whole calculated pressure region, the contraction of l-GaSb can be divided into three substages: 1.8-5.4, 5.4-10.0, and 10.0-20.0 GPa. It is further confirmed by analyzing the bond-angle distributions of Ga-Ga-Ga and Sb-Sb-Sb that the rearrangement of Sb atoms under pressure plays a crucial role in the structure change of l-GaSb.
authors.affiliation: The Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, and School of Electrical Engineering, Shandong University-Southern Campus, Jinan 250061, People's Republic of China. gutk@sdu.edu.cn
authors.forename: Tingkun
authors.initials: T
authors.lastname: Gu
authors.forename: Jingyu
authors.initials: J
authors.lastname: Qin
authors.forename: Xiufang
authors.initials: X
authors.lastname: Bian
authors.forename: Changye
authors.initials: C
authors.lastname: Xu