Anisotropic spin motive force in multi-layered Dirac fermion system, α-(BEDT-TTF)2I3

International Workshop on Dirac Electrons in Solids 2015

Kubo, K.^1 ; Morinari, T.^1

Graduate School of Human and Environmental Studies, Kyoto University, Kyoto

606-8501, Japan^1

关键词: Anisotropic interaction;    Antiferro-magnetic interactions;    Dirac fermions;    Ferro-magnetic interactions;    Massless dirac fermions;    Multi-layered;    Spin ordered state;    Spin textures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/603/1/012012/pdf
DOI  :  10.1088/1742-6596/603/1/012012

来源: IOP

【 摘 要 】

We investigate the anisotropic spin motive force in α-(BEDT-TTF)2I3, which is a multi-layered massless Dirac fermion system under pressure. Assuming the interlayer antiferromagnetic interaction and the interlayer anisotropic ferromagnetic interaction, we numerically examine the spin ordered state of the ground state using the steepest descent method. The anisotropic interaction leads to the anisotropic spin ordered state. We calculate the spin motive force produced by the anisotropic spin texture. The result quantitatively agrees with the experiment.