Ferroelectric control of the giant Rashba spin orbit coupling in GeTe(111)/InP(111) superlattice

Autor: Meng, Yu-Hua, Bai, Wei, Gao, Heng, Gong, Shi-Jing, Duan, Chun-Gang, Chu, Jun-Hao
Rok vydání: 2017
Předmět:
Druh dokumentu: Working Paper
Popis: GeTe wins the renewed research interest due to its giant bulk Rashba spin orbit coupling (SOC), and becomes the father of a new multifunctional material, i.e., ferroelectric Rashba semiconductor. In the present work, we investigate Rashba SOC at the interface of the ferroelectric semiconductor superlattice GeTe(111)/InP(111) by using the first principles calculation. Contribution of the interface electric field and the ferroelectric field to Rashba SOC is revealed. A large modulation to Rashba SOC and a reversal of the spin polarization is obtained by switching the ferroelectric polarization. Our investigation about GeTe(111)/InP(111) superlattice is of great importance in the application of ferroelectric Rashba semiconductor in the spin field effect transistor.
Databáze: arXiv