Axial current driven by magnetization dynamics in Dirac semimetals

作者:Taguchi Katsuhisa*; Tanaka Yukio
来源:Physical Review B, 2015, 91(5): 054422.
DOI:10.1103/PhysRevB.91.054422

摘要

We theoretically study the axial current j(5) (defined as the difference between the charge current with opposite helicity) in the magnetic insulator/doped Dirac semimetal using microscopic theory. In the Dirac semimetal, the axial current is induced by the magnetization dynamics, which is produced from the proximity effect of the magnetization of the magnetic insulator. We find that the induced axial current can be detected by using ferromagnetic resonance or the inverse spin Hall effect and can be converted into charge current with no accompanying energy loss. These properties make the Dirac semimetal advantageous for application to low-consumption electronics with new functionality.

  • 出版日期2015-2-25