Experimental and theoretical investigations on effects of hydrostatic pressure on the electrical properties of rhombohedral Sb2Te3
R. Li,
Y. H. Guo,
B. Xu,
Y. Su,
J. Yin,
C. H. Zhang,
Y. D. Xia,
Z. G. Liu,
Z. Xu,
L. C. Wu,
Z. T. Song
Affiliations
R. Li
Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, P. R. China
Y. H. Guo
Department of Materials Science and Engineering and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, P. R. China
B. Xu
Department of Materials Science and Engineering and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, P. R. China
Y. Su
Department of Materials Science and Engineering and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, P. R. China
J. Yin
Department of Materials Science and Engineering and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, P. R. China
C. H. Zhang
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710046, P. R. China
Y. D. Xia
Department of Materials Science and Engineering and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, P. R. China
Z. G. Liu
Department of Materials Science and Engineering and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, P. R. China
Z. Xu
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710046, P. R. China
L. C. Wu
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information technology, Chinese Academy of Sciences, Shanghai 200050, P. R. China
Z. T. Song
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information technology, Chinese Academy of Sciences, Shanghai 200050, P. R. China
We have investigated the effect of the hydrostatic pressure on the electrical properties of the rhombohedral phase change material Sb2Te3 both experimentally and theoretically. The resistance can be reduced by 24.9% when the applied hydrostatic pressure reaches 0.377 GPa in the experiment, which is consistent with the results of the calculations by using the first principles theoretical method. The increase of the conductivity of Sb2Te3 under the hydrostatic pressure can be ascribed to the reduction of the electronic band gap.
