[10a-N303-1~11] 10.4 Spintronics in semiconductor, topological material, superconductor, and multiferroics

9:15 AM - 9:30 AM JST(12:15 AM - 12:30 AM UTC)

[10a-N303-2] ab initio Quasi-Particle calculations and Spin Other Orbital Coupling for Bi₂Se₃

〇Jun Inagaki¹ (1.HiSOR)

Keywords:

GW approximation,Topologiacal Insulator,Spin Orbital Coupling

Based on ab initio quasiparticle calculations of the prototypical topological insulator Bi₂Se₃, we investigate the two-particle spin–orbit interaction, namely, the Spin Other Orbital Coupling (SOOC). Conventional GW+SOC frameworks have been limited to perturbative eigenvalue corrections. However, the implementation of Spinor Full Relativistic GW, which uses spinor wavefunctions obtained from DFT in the GW approximation, now enables applications to topological insulators with strong spin–orbit coupling. In this talk, we will report on this quasiparticle computational framework and present a theoretical discussion on SOOC based on the results.