Multiband k p theory for holes at the T-point in bismuth

International Workshop on Dirac Electrons in Solids 2015

Fuseya, Yuki^1

Department of Engineering Science, University of Electro-Communications, Chofu, Tokyo

182-8585, Japan^1

关键词: Brillouin zones;    Effective g-factor;    G factors;    Multiband;    Multiband systems;    Spin orbit interactions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/603/1/012003/pdf
DOI  :  10.1088/1742-6596/603/1/012003

来源: IOP

【 摘 要 】

Effective g-factor for multiband system with a strong spin-orbit interaction is investigated. A simple, general, and gauge-invariant formula for the effective g-factor is obtained on the basis of k • p theory. By taking into account the symmetry for the T-point in Brillouinzone of bismuth, the formula of the effective g-factor is further simplified. The obtained results give a reasonable explanation for the longstanding puzzle about the large anisotropic g-factor of holes in bismuth.