82 citations · 309 across the 18 of their papers we have counts for
Showing 2010Show all
2 papers · 1 filter
cond-mat.supr-con2010
Impurity effect in multi-orbital, sign-reversing s-wave superconductors
Yuki Nagai, Kazuhiko Kuroki, Masahiko Machida +1
We study the impurity effects on the transition temperature Tc with use of the T-matrix approximation. We propose a way to visualize the multi-orbital effect by introducing the hyb…
quant-ph2010★ 14 cited
Macroscopic quantum tunneling in multigap superconducting Josephson junctions: Escape rate enhancement via quantum fluctuations of Josephson-Leggett mode
Yukihiro Ota, Masahiko Machida, Tomio Koyama
We theoretically study the macroscopic quantum tunneling (MQT) in a hetero Josephson junction formed by a conventional single-gap superconductor and a multi-gap one such as ${MgB}_…