Higher-order topological superconductivity in type-II time-reversal symmetric Weyl semimetals with a hybrid pairing

Junkang Huang; Z. D. Wang; Tao Zhou

doi:10.1103/xy6g-q2f5

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Higher-order topological superconductivity in type-II time-reversal symmetric Weyl semimetals with a hybrid pairing

Junkang Huang, Z. D. Wang, Tao Zhou

DOI 10.1103/xy6g-q2f5 · Physical Review B

T1

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Abstract

We employed the self-consistent method on a two-orbital type-II time-reversal-symmetric Weyl semimetal, revealing a hybrid pairing of singlet s wave and triplet p wave. We present a detailed analysis of the normal-state electronic structure and the self-consistent results. Our findings indicate that the selection of hybrid pairings is governed by distinct surface Fermi-arc configurations: specifically, s-wave pairing dominates on the bottom surface, while p-wave pairing prevails on the top. Furthermore, the emergent superconducting state is a second-order topological superconductor with hinge states in the system. Our results identify type-II time-reversal-invariant Weyl semimetals as a promising intrinsic platform for realizing unconventional and topological superconductivity.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
PtBi2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
MoTe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown