Intrinsic and Extrinsic Spin Hall Conductivity of BaPb_{0.75}Bi_{0.25}O_{3} Ansell Alvarez Anderson [a*], Anugrah Azhar [b,c], Adam Badra Cahaya [a], Muhammad Aziz Majidi [a]
[a] Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok 16424, Indonesia
*ansell.alvarez[at]sci.ui.ac.id
[b] Department of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
[c] Physics Study Program, Faculty of Science and Technology, Syarif Hidayatullah State Islamic University Jakarta, Tangerang Selatan 15412, Indonesia
Abstract
Charge-to-spin conversion is an important physical property in the spintronics field. One of the physical phenomena that provides charge-to-spin is the spin Hall effect. A quantity that determines the spin Hall effect is the spin Hall conductivity which can be obtained from the material^s intrinsic Berry curvature and impurity scatterings. In this work, we aim to obtain the spin Hall conductivity of \(BaPbO_{3}\) (BPO) and one of its Bi-doped version of crystal \(BaPb_{0.75}Bi_{0.25}O_{3}\) (BPBO) by using density functional theory with the relativistic effect considered and Wannier function calculations. We find the sum of BPBO intrinsic spin Hall conductivity from our computational calculation and extrinsic spin Hall conductivity from contributions of impurity skew scattering and side jump to be \(5.74 \cdot 10^{3} \frac{\hbar}{2e} \frac{S}{m}\) where the extrinsic contribution dominates the intrinsic contribution.
Keywords: Density functional theory- Spin Hall conductivity- Berry curvature
