Anomaly induced chiral magnetic current in a Weyl semimetal: Chiral electronics

Electric circuits involving Weyl semimetals possess unusual properties induced by the quantum anomaly. The chiral magnetic current in a Weyl semimetal subjected to magnetic field modifies the behavior of such circuits in a drastic way. We consider two explicit examples: (i) a circuit involving the ``chiral battery'' and (ii) a circuit that can be used as a ``quantum amplifier'' of magnetic field. The unique properties of these circuits stem from the chiral anomaly and may be utilized for creating ``chiral electronic'' devices.