Condensed matter realization of the axial magnetic effect

Article

关键词: DOPED TOPOLOGICAL INSULATOR;    SINGLE DIRAC CONE;    SURFACE;   

DOI  :  10.1103/PhysRevB.89.081407

来源: SCIE

【 摘 要 】

The axial magneticeffect, i.e., the generation of an energy current parallel to an axial magnetic field coupling with opposite signs to left-and right-handed fermions, is a nondissipative transport phenomenon intimately related to the gravitational contribution to the axial anomaly. An axial magnetic field emerges naturally in condensed matter in so-called Weyl semimetals. We present a measurable implementation of the axial magnetic effect. We show that the edge states of a Weyl semimetal at finite temperature possess a temperature dependent angular momentum in the direction of the vector potential intrinsic to the system. Such a realization provides a plausible context for the experimental confirmation of the elusive gravitational anomaly.

【 授权许可】

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