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Half-Quantum Vortices in Thin Film of Superfluid He
Kenji Kondo, Tetsuo Ohmi, Mikio Nakahara +3
Stability of a half-quantum vortex (HQV) in superfluid He has been discussed recently by Kawakami, Tsutsumi and Machida in Phys. Rev. B {\bf 79}, 092506 (2009). We further exte…
Symmetry Protected Topological Order and Spin Susceptibility in Superfluid 3He-B
Takeshi Mizushima, Masatoshi Sato, Kazushige Machida
We here demonstrate that the superfluid 3He-B under a magnetic field in a particular direction stays topological due to a discrete symmetry, that is, in a symmetry protected topolo…
Stable Skyrmions in SU(2) Gauged Bose-Einstein Condensates
Takuto Kawakami, Takeshi Mizushima, Muneto Nitta +1
We demonstrate that the three-dimensional Skyrmion, which has remained elusive so far, spontaneously appears as the ground state of (2) symmetric Bose-Einstein condensates coup…
Edge Current due to Majorana Fermions in Superfluid He A- and B-Phases
Yasumasa Tsutsumi, Kazushige Machida
We propose a method utilizing edge current to observe Majorana fermions in the surface Andreev bound state for the superfluid He A- and B-phases. The proposal is based on self-…
A Spin Triplet Superconductor UPt
Yasumasa Tsutsumi, Kazushige Machida, Tetsuo Ohmi +1
Motivated by a recent angle-resolved thermal conductivity experiment that shows a twofold gap symmetry in the high-field and low-temperature C phase in the heavy-fermion supercondu…