First-principles and k·p study of strained HgTe shows linearly k-dependent higher-order C4 strain terms produce nontrivial sub-band splitting, explaining camel-back features and supporting a Weyl semimetal phase under compression.
Leubner,Strain-engineering of the Topological Insula- tor HgTe, doctoralthesis, Universität Würzburg (2017)
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Anisotropic sub-band splitting mechanisms in strained HgTe: a first principles study
First-principles and k·p study of strained HgTe shows linearly k-dependent higher-order C4 strain terms produce nontrivial sub-band splitting, explaining camel-back features and supporting a Weyl semimetal phase under compression.