Rotational strain in Weyl semimetals: A continuum approach

被引：48

作者：

Arjona, Vicente ^{[1
]}

Vozmediano, Maria A. H.

机构：

[1] Inst Ciencia Mat Madrid, Madrid 28049, Spain

来源：

PHYSICAL REVIEW B | 2018年 / 97卷 / 20期

关键词：

TOPOLOGICAL DIRAC SEMIMETAL; SIGNATURES; DISCOVERY;

D O I：

10.1103/PhysRevB.97.201404

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We use a symmetry approach to derive the coupling of lattice deformations to electronic excitations in three-dimensional Dirac and Weyl semimetals in the continuum low-energy model. We focus on the effects of rotational strain and show that it can drive transitions from Dirac to Weyl semimetals, gives rise to elastic gauge fields, tilts the cones, and generates pseudo-Zeeman couplings. It also can generate a deformation potential in volume-preserving deformations. The associated pseudoelectric field contributes to the chiral anomaly.

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页数：4

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