4 papers
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…
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…
Material realization of spinless, covalent-type Dirac semimetals in three dimensions
Yuki Tanaka, Rinsuke Yamada, Manabu Sato +2
Realization of a three-dimensional (3D) analogue of graphene has been a central challenge in topological materials science. Graphene is stabilized by covalent bonding unlike conven…
Ideal Spin-Orbit-Free Dirac Semimetal and Diverse Topological Transitions in PrCoGa Family
Manabu Sato, Juba Bouaziz, Shuntaro Sumita +5
Topological semimetals, known for their intriguing properties arising from band degeneracies, have garnered significant attention. However, the discovery of a material realization…