Journal
PHYSICAL REVIEW B
Volume 95, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.95.201110
Keywords
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Funding
- European Union's Seventh Framework Programme (FP7) through the ERC Advanced Grant NOV-GRAPHENE [290846]
- Marie Curie Programme under EC Grant [705968]
- European Commission under the Graphene Flagship [CNECTICT-604391]
- Marie Curie Actions (MSCA) [705968] Funding Source: Marie Curie Actions (MSCA)
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We consider mixed symmetry superconducting phases in Dirac materials in the odd-parity channel, where pseudoscalar and vector order parameters can coexist due to their similar critical temperatures when attractive interactions are of a finite range. We show that the coupling of these order parameters to unordered magnetic dopants favors the condensation of time-reversal symmetry breaking (TRSB) phases, characterized by a condensate magnetization, rotation symmetry breaking, and simultaneous ordering of the dopant moments. We find a rich phase diagram of mixed TRSB phases characterized by peculiar bulk quasiparticles, with Weyl nodes and nodal lines, and distinctive surface states. These findings are consistent with recent experiments on Nb x Bi2Se3 that report evidence of point nodes, nematicity, and TRSB superconductivity induced by Nb magnetic moments.
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