Nontrivial contributions to the magnetoconductivity due to anomalous g-factor in the Luttinger Hamiltonian

International Workshop on Dirac Electrons in Solids 2015

Suemasa, Riki^1 ; Fuseya, Yuki^1

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

182-8585, Japan^1

关键词: Effective g-factor;    Heavy-hole bands;    Luttinger Hamiltonian;    Magneto-conductivity;    Matrix elements;    Selection Rules;    Spin currents;    Wave vector;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/603/1/012022/pdf
DOI  :  10.1088/1742-6596/603/1/012022

来源: IOP

【 摘 要 】

The effective g-factor and the selection rules for the matrix elements of the velocity operator are investigated for the Luttinger Hamiltonian under a magnetic field. It is shown that the g-factor has a strong kz-dependence, where kzis the wave vector along the magnetic field. This anomalous kz-dependence is due to the interband effect of the magnetic field between the light and heavy hole bands. It is found that a nontrivial contribution to the longitudinal magnetoconductivity arises also due to the interband effects by analyzing the selection rules. This nontrivial interband contribution can be a source of the longitudinal spin current.