Higher-order topological superconductivity in type-II time-reversal symmetric Weyl semimetals with a hybrid pairing
Phys. Rev. B 113, 054523 – Published 25 February, 2026
DOI: https://doi.org/10.1103/xy6g-q2f5
Abstract
We employed the self-consistent method on a two-orbital type-II time-reversal-symmetric Weyl semimetal, revealing a hybrid pairing of singlet wave and triplet 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, -wave pairing dominates on the bottom surface, while -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.