3 papers
cond-mat.mes-hall2026
Phase-shift instanton approach to tunneling duality in Read--Rezayi state
Ryoi Ohashi, Hiroki Isobe, Ryota Nakai +1
We study the duality between quasi-particle and electron tunneling in point-contact geometries of fractional quantum Hall states. To treat non-Abelian edge operators, we introduce…
cond-mat.supr-con2025
Magnetic penetration depth in topological superconductors: Effect of Majorana surface states and application for UTe
Kazuki Akuzawa, Jushin Tei, Ryoi Ohashi +2
In this study, we examine how orbital degrees of freedom and Majorana surface states influence the magnetic penetration depth in the superconductor UTe. Using a two-orbital mod…
cond-mat.supr-con2025
Detecting Topological Phase Transition in Superconductor-Semiconductor Hybrids by Electronic Raman Spectroscopy
Takeshi Mizushima, Yukio Tanaka, Jorge Cayao
In superconductor-semiconductor hybrids, applying a magnetic field closes a trivial bulk gap and causes a topological phase transition (TPT), resulting in the emergence of Majorana…