4 citations · 6 across the 4 of their papers we have counts for
5 papers
Topological Superconducting Phases in a Strained Altermagnet-Superconductor Heterostructure
Keita Yoshizawa, Ryo Okugawa, Takami Tohyama
We investigate topological superconductivity in a heterostructure consisting of a two-dimensional -wave superconductor and a -wave altermagnet with Rashba spin-orbit coupling…
Floquet-Weyl states at one-photon resonances in three-dimensional topological insulators
Keiya Uehara, Ryo Okugawa, Takami Tohyama +1
Quantum materials exhibit exotic phases and electronic responses under irradiation by circularly polarized light, which breaks time-reversal symmetry and generates Floquet replica…
Chern insulators and topological flat bands in cavity-embedded kagome systems
Hikaru Goto, Ryo Okugawa, Takami Tohyama
We investigate topological band structures of a kagome system coupled to a circularly polarized cavity mode, using a model based on a muffin-tin potential and quantum light-matter…
Gapless superconductivity and its real-space topology in quasicrystals
Kazuma Saito, Masahiro Hori, Ryo Okugawa +2
We study superconductivity in Ammann-Beenker quasicrystals under magnetic field. By assuming an intrinsic -wave pairing interaction and solving for mean-field equations self-con…
Weyl superconductivity and quasiperiodic Majorana arcs in quasicrystals
Masahiro Hori, Ryo Okugawa, K. Tanaka +1
Weyl superconductivity is a topological phase in three-dimensional crystals in which the Weyl equation describes quasiparticle excitation near band-touching points in momentum spac…