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

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

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 pseud...

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Veröffentlicht in:arXiv.org 2018-01
Hauptverfasser: Zabolotskiy, A D, Lozovik, Yu E
Format: Artikel
Sprache:eng
Schlagworte:
Brillouin zones
Dependence
Nodes
Physics - Mesoscale and Nanoscale Physics
Symmetry
Tensors
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Zusammenfassung: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1707.02781