Electric field and strain engineering tuning Rashba spin splitting in quasi-one-dimensional organic-inorganic hybrid perovskites (MV)AI3Cl2 (MV = methylviologen, A = Bi, Sb)

Chao Wang; Shouyu Wang; Zhifeng Xiao; Winnie Wong-Ng; Wei Zhou; Weifang Liu

doi:10.1039/d2cp02059a

Electric field and strain engineering tuning Rashba spin splitting in quasi-one-dimensional organic-inorganic hybrid perovskites (MV)AI₃Cl₂ (MV = methylviologen, A = Bi, Sb)

Phys Chem Chem Phys. 2022 Aug 3;24(30):18401-18407. doi: 10.1039/d2cp02059a.

Authors

Chao Wang¹, Shouyu Wang², Zhifeng Xiao², Winnie Wong-Ng³, Wei Zhou¹, Weifang Liu¹

Affiliations

¹ Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Science, Tianjin University, Tianjin 300072, China. wfliu@tju.edu.cn.
² College of Physics and Material Science, Tianjin Normal University, Tianjin 300074, China. shouyu.wang@yahoo.com.
³ Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA.

PMID: 35880800
DOI: 10.1039/d2cp02059a

Abstract

We systematically study the Rashba spin texture of lead-free quasi-one-dimensional organic-inorganic hybrid perovskites (OIHP), (MV)AI₃Cl₂ (MV = methylviologen, A = Bi, Sb) with first-principles calculations. The k_x-k_y plane Rashba spin splitting was found to depend on the composition of Bi (Sb) and I atoms at band edges. Importantly, increasing ferroelectric polarization and the stretch along the z-direction can effectively enhance the amplitude of the Rashba spin splitting. This work provides an avenue for electric field and strain-controlled spin splitting and highlights the potential of quasi-one-dimensional OIHP for further applications in spin field effect transistors and photovoltaic cells.