Strain-induced pseudomagnetic and scalar fields in symmetry-enforced Dirac nodes

[摘要] It is known that Dirac nodes can be present at high-symmetry points of Brillouin zone only for certain space groups. For these cases, the effect of strain is treated by symmetry considerations. The dependence of strain-induced potentials on the strain tensor is found. In all but two cases, the pseudomagnetic field potential is present. It can be used to control valley currents. (C) 2017 Elsevier B.V. All rights reserved.

[发布日期] 2018-08-01

[效力级别]  Proceedings Paper

[关键词] Dirac fermions;Pseudomagnetic field;Lattice symmetry