3 papers
cond-mat.supr-con2025
Euler band topology in superfluids and superconductors
Shingo Kobayashi, Manabu Sato, Akira Furusaki
Real band topology often appears in systems with space-time inversion symmetry and is characterized by invariants such as the Euler and second Stiefel-Whitney classes. Here, we exa…
cond-mat.mes-hall2025
Three-dimensional spinless Euler insulators with rotational symmetry
Manabu Sato, Shingo Kobayashi, Motoaki Hirayama +1
The Euler class is a -valued topological invariant that characterizes a pair of real bands in a two-dimensional Brillouin zone. One of the symmetries that permits its d…
cond-mat.supr-con2025
Higher-order topological phases for time-reversal-symmetry breaking superconductivity in UTe
Yuki Yamazaki, Shingo Kobayashi
The recent discovery of heavy-fermion superconductor UTe has broadened the possibility of realizing exotic time-reversal-symmetry-breaking superconductivity. However, a compreh…