期刊
PHYSICAL REVIEW B
卷 88, 期 13, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.88.134504
关键词
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资金
- Department of Energy, Division of Materials Science [DE-FG02-07ER46453]
- AFOSR [FA9550-10-1-0459]
- ONR [N0014-11-1-0728]
We study superconductivity in a Weyl semimetal with broken time-reversal symmetry and stabilized by a point-group symmetry. The resulting superconducting phase is characterized by topologically protected bulk nodes and surface states with Fermi arcs. The topological invariant governing the system is calculated using changes in eigenvalues of the point-group operator along high-symmetry momentum lines. We show that this invariant is determined by the Fermi surface topology of the Weyl semimetal. We discuss the effect of surface orientation and C-4-breaking strain as possible experimental consequences.
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