Weyl disks: Theoretical prediction

Janis Erdmanis, Árpád Lukács, Yuli V. Nazarov

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)
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A variety of quantum systems exhibit Weyl points in their spectra where two bands cross in a point of three-dimensional parameter space with conical dispersion in the vicinity of the point. We consider theoretically the soft constraint regime where the parameters are dynamical quantum variables. We have shown that in general the soft constraints, in the quasiclassical limit, result in Weyl disks where two states are (almost) degenerate in a finite two-dimensional region of the three-dimensional parameter space. We provide concrete calculations for two setups: Weyl point in a four-terminal superconducting structure and a Weyl exciton, i.e., a bound state of Weyl electron and a massive hole.

Original languageEnglish
Article number241105
Number of pages5
JournalPhysical Review B
Issue number24
Publication statusPublished - 2018


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