Manipulation of Spin Splitting in Two-Dimensional Lead Bromide Perovskite Rashba Piezoelectrics
Source abstract
Abstract
In this work, a two-dimensional perovskite Rashba piezoelectrics (TPRP) is proposed by a density functional theory study. The Rashba spin splitting in TPRP is optimized via the dipole moment of A-site organic cations and the atom displacement in inorganic [PbBr6]2– octahedrons. The Rashba spin splitting energy and the corresponding parameter (αR) of unstrained (ATHP)2PbBr4 TPRP are calculated as 41 meV and 0.65 eV·Å, respectively. This value should be the highest for any Br-based lead halide perovskites to the best of our knowledge. In addition, the value of αR, responsible for the piezoelectric potential, is further tuned from 0.41 to 0.81 eV·Å via adjusting the local polarization by applying a strain from +0.01 to −0.01 along the c axis.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Perovskite Materials and Applications · 2D Materials and Applications · Organic and Molecular Conductors Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Ave West, Waterloo N2L3G1, ON, Canada
Advanced Photonics Center, Southeast University, Nanjing 210096, P.R. China
Department of Electrical and Computer Engineering, University of Waterloo, 200 University Ave, Waterloo N2L3G1, ON, Canada
School of Physics and Electronics, Henan University, No. 1 Jinming street, Kaifeng 475004, Henan, P.R. China
Funding
University of Waterloo · Natural Sciences and Engineering Research Council of Canada · Ontario Centers of Excellence
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