290 citations · 1.6k across the 46 of their papers we have counts for
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Possible "Magnéli" phases and self-alloying in the superconducting sulfur hydride
Ryosuke Akashi, Wataru Sano, Ryotaro Arita +1
We theoretically give an infinite number of metastable crystal structures for the superconducting sulfur hydride HS under pressure. It has been thought that theoretically pre…
Strong bilayer coupling induced by the symmetry breaking in the monoclinic phase of BiS-based superconductors
Masayuki Ochi, Ryosuke Akashi, Kazuhiko Kuroki
We perform first-principles band structure calculations for the tetragonal and monoclinic structures of LaOFBiS. We find that the Bi bands on two BiS…
Modification of electronic structure and thermoelectric properties of hole-doped tungsten dichalcogenides
M. Kriener, A. Kikkawa, T. Suzuki +4
We present a study on the modification of the electronic structure and hole-doping effect for the layered dichalcogenide WSe_2 with a multi-valley band structure, where Ta is doped…
Two-Dimensional Valley Electrons and Excitons in Noncentrosymmetric 3R MoS
Ryosuke Akashi, Masayuki Ochi, Sándor Bordács +4
We find that the motion of the valley electrons -- electronic states close to the and points of the Brillouin zone -- is confined into two dimension when the l…
First-principles study of the pressure and crystal-structure dependences of the superconducting transition temperature in compressed sulfur hydrides
Ryosuke Akashi, Mitsuaki Kawamura, Shinji Tsuneyuki +2
We calculate superconducting transition temperatures () in sulfur hydrides HS and HS from first principles using the density functional theory for supercondu…