132 citations · 170 across the 8 of their papers we have counts for
9 papers · 1 filter
New approach to theory of tunneling spectroscopy in unconventional superconductors
A. V. Burmistrova, I. A. Devyatov, Alexander A. Golubov +2
We have derived new boundary conditions on wave function at the normal metal / superconductor (NS) interface beyond effective mass approximation. These conditions are based on tigh…
Anomalous Josephson current in superconducting topological insulator
Ai Yamakage, Masatoshi Sato, Keiji Yada +2
We investigate the effect of helical Majorana fermions at the surface of superconducting topological insulators (STI) on the Josephson current by referring to possible pairing stat…
Theory of edge states in a quantum anomalous Hall insulator/ spin-singlet s-wave superconductor hybrid system
Akihiro Ii, Keiji Yada, Masatoshi Sato +1
We study the edge states for a quantum anomalous Hall system (QAHS) coupled with a spin-singlet s-wave superconductor through the proximity effect, and clarify the topological natu…
Surface density of states and topological edge states in non-centrosymmetric superconductors
Keiji Yada, Masatoshi Sato, Yukio Tanaka +1
We study Andreev bound state (ABS) and surface density of state (SDOS) of non-centrosymmetric superconductor where spin-singlet -wave pairing mixes with spin-triplet (or $f)…
A Microscopic Theory of Odd-freqeuncy Pairing in the Two-dimensional Extended Hubbard Model
Keiji Yada, Seiichiro Onari, Yukio Tanaka +1
We present a microscopic theory of fluctuation-mediated pairing mechanism in a two-dimensional extended Hubbard model. In contrast to conventional wisdom, odd-frequency spin-triple…
s-wave Superconductivity due to Suhl-Kondo Mechanism in NaCoOHO: Effect of Coulomb Interaction and Trigonal Distortion
Keiji Yada, Hiroshi Kontani
To study the electron-phonon mechanism of superconductivity in NaxCoO2, we perform semiquantitative analysis of the electron-phonon interaction (EPI) between relevant optical phono…