Magnetic Field-Induced “Mirage” Gap in an Ising Superconductor

Superconductivity is commonly destroyed by a magnetic field due to orbital or Zeeman-induced pair breaking. Surprisingly, the spin-valley locking in two-dimensional superconductor with spin-orbit interaction makes superconducting state resilient large fields. We investigate spectral properties of such an Ising taking into account disorder. The interplay in-plane and coupling leads noncollinear effective find that emerging singlet triplet pairing correlations manifest themselves occurrence "mirage" gaps: at (high) energies order strength, gap-like structure spectrum emerges mirrors main gap. show these mirage gaps are signatures equal-spin finite-energy their odd parity sensitive intervalley scattering.