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Quantum anomalies in superconducting Weyl metals

Rui Wang, Lei Hao, Baigeng Wang, C. S. Ting

DOI 10.1103/PhysRevB.93.184511 · Physical Review B

T1

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Abstract

We theoretically study the quantum anomalies in the superconducting Weyl metals based on the topological field theory. It is demonstrated that the Fermi arc and the surface Andreev bound state, characteristic of the superconducting Weyl metals, are the manifestations of two underlying phenomena, namely, the chiral anomaly and the paritylike anomaly, respectively. The first anomaly is inherited from the Berry curvature around the original Weyl points, while the second is the result of the superconductivity. We show that all the fascinating topological behavior of the superconducting Weyl metals, either the intranode Fulde-Ferrell-Larkin-Ovchinnikov or the internode Bardeen-Cooper-Schrieffer pairing state, can be satisfactorily described and predicted by our topological field theory.

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FormulaReported Tc (K)Pressure (GPa)Type
MoTe2

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8.2Pressure not reportedunknown

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