Chiral Magnetic Effect due to Inhomogeneous Magnetic Fields in Noncentrosymmetric Weyl Semimetals

Yohei Ibe, Hiroaki Sumiyoshi

Published 2016-05-15Version 1

It is an open problem whether or not the chiral magnetic effect occurs in inversion-symmetry broken Weyl semimetals. We propose that spatially inhomogeneous magnetic fields can realize this effect. Employing tight binding calculations and the linear response theory, we demonstrate that a finite current density is generated by inhomogeneous magnetic fields, while the spatial integration of the current is equal to zero, which is consistent with the so-called "no-go theorem" of chiral magnetic effect in real lattice systems.