The electrical transportation and carrier behavior of ZnSe under high pressure

Abstract

With in situ electrical resistivity and Hall effect measurement, electrical transportation property and charge carrier behavior of ZnSe were investigated under high pressure using a diamond anvil cell (DAC). The electrical resistivity changed discontinuously at 7.7 and 11.9 GPa, corresponding to the phase transitions of ZnSe. In the pressure interval of 7.7–11.9 GPa, the electrical resistivity changed continuously, indicating the existence of the intermediate phase between the zinc blende and rock salt phases. The difference of carrier characteristic between the intermediate and rock salt phases can also suggest the existence of the intermediate phase. For the intermediate phase, the increase in electrical resistivity is from the decrease in mobility. While for the rock salt phase, the increase in charge carrier concentration leads to the decrease in electrical resistivity.

Keywords:

• high pressure
• electrical transportation
• carrier behavior
• phase transition

Disclosure statement

No potential conflict of interest was reported by the authors.

Funding

This work was supported by the National Basic Research Program of China [grant number 2011CB808204]; the National Natural Science Foundation of China [grant numbers 51479220, 11374121, 11074094, and 91014004]; the National Youth Program Foundation of China [grant number 11404137]; the Program for the development of Science and Technology of Jilin province [grant numbers 201201079 and 201215222]; and the Open Project Program of National Laboratory of Superhard Materials (Jilin University) [grant number 201208].