Surface Fermi arcs in $Z_2$ Weyl semimetals $A_3 Bi$ (A=Na, K, Rb)

E. V. Gorbar; I. A. Shovkovy; P. O. Sukhachov; V. A. Miransky

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Surface Fermi arcs in Z₂ Weyl semimetals A₃ Bi (A=Na, K, Rb)

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arxiv 1503.07913 v2 pith:GCH3OMCW submitted 2015-03-26 cond-mat.str-el hep-ph

Surface Fermi arcs in Z₂ Weyl semimetals A₃ Bi (A=Na, K, Rb)

E. V. Gorbar , V. A. Miransky , I. A. Shovkovy , P. O. Sukhachov This is my paper

classification cond-mat.str-el hep-ph

keywords fermiarcssurfacesymmetrybulkdifferentlinksemimetals

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The surface Fermi arc states in $Z_2$ Weyl semimetals $A_3 Bi$ (A=Na, K, Rb) are studied by employing a continuum low-energy effective model. It is shown that the surface Fermi arc states can be classified with respect to the ud-parity symmetry. Because of the symmetry, the arcs come in mirror symmetric pairs. The effects of symmetry breaking terms on the structure of the Fermi arcs are also studied. Among other results, we find at least two qualitatively different types of the surface Fermi arcs. The arcs of the first type link disconnected sheets of the bulk Fermi surface, while arcs of the second type link different points of the same bulk Fermi surface sheet.

Surface Fermi arcs in Z₂ Weyl semimetals A₃ Bi (A=Na, K, Rb)

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