Dresden 2017 – scientific programme

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MA: Fachverband Magnetismus

MA 19: Transport: Topological Semimetals 1 (jointly with DS, MA, HL, O)

MA 19.8: Talk

Tuesday, March 21, 2017, 11:30–11:45, HSZ 201

PT Anomalous Transport in a Nodal Line Dirac Semimetal — •Wenbin Rui, Yuxin Zhao, and Andreas P. Schnyder — Max-Planck-Institut für Festkörperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany

Recently PT invariant topological nodal line Dirac semimetals have attracted increasing attentions in quantum matter. Here we study the anomalous transport of the PT symmetric Dirac semimetals of (3+1) dimensions as responses to electromagnetic fields, for which the universal currents are originated from the parity anomaly in (2+1)-dimensional quantum field theory. Considering that the total sum of anomalous currents from soft modes spreading along the nodal loop vanishes, we design a feasible experiment to detect the effect, which is able to separate anomalous currents from distinct regions of the nodal loop.