Topological superconductivity from unconventional band degeneracy with conventional pairing
We present a new scheme for Majorana modes in systems with nonsymmorphic-symmetry-
protected band degeneracy. We reveal that when the gapless fermionic excitations are …
protected band degeneracy. We reveal that when the gapless fermionic excitations are …
Fermi-surface diagnosis for -wave-like topological superconductivity
Theoretical prediction of topological superconductivity is key to their discovery. Recently, it is
proved that in 199 out of 230 space groups, topological superconductivity coexists with an …
proved that in 199 out of 230 space groups, topological superconductivity coexists with an …
General corner charge formulas in various tetrahedral and cubic space groups
In some insulators, corner charges are fractionally quantized, due to the topological invariant
called a filling anomaly. The previous theories of fractional corner charges have been mostly …
called a filling anomaly. The previous theories of fractional corner charges have been mostly …
A Discrete Formulation of Second Stiefel-Whitney Class for Band Theory
K Shiozaki, JY Chen - arXiv preprint arXiv:2412.18796, 2024 - arxiv.org
Topological invariants in band theory are often formulated assuming that Bloch wave
functions are smoothly defined over the Brillouin zone (BZ). However, first-principles band …
functions are smoothly defined over the Brillouin zone (BZ). However, first-principles band …
Pairing symmetry and fermion projective symmetry groups
Abstract The Ginzburg-Landau (GL) theory is very successful in describing the pairing
symmetry, a fundamental characterization of the broken symmetries in a paired superfluid or …
symmetry, a fundamental characterization of the broken symmetries in a paired superfluid or …