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Parity-Mixed Superconductivity in Locally Non-centrosymmetric System
Tomohiro Yoshida, Manfred Sigrist, Youichi Yanase
We study the parity-mixed superconductivity in locally non-centrosymmetric systems. In multilayer systems an inhomogeneous Rashba spin-orbit coupling is induced by the local violat…
Magneto-Electric Effect in Three-dimensional Coupled Zigzag Chains
Youichi Yanase
Stimulated by recent studies of quantum phases with broken local inversion symmetry, we study the magnetoelectric effect in locally noncentrosymmetric metals. We consider three-dim…
Multi-Orbital Superconductivity in SrTiO3 /LaAlO3 Interface and SrTiO3 Surface
Yasuharu Nakamura, Youichi Yanase
We investigate the superconductivity in two-dimensional electron systems formed in SrTiO3 nanostructures. Our the- oretical analysis is based on the three-orbital model, which take…
Complex-Stripe Phases Induced by Staggered Rashba Spin-Orbit Coupling
Tomohiro Yoshida, Manfred Sigrist, Youichi Yanase
We study superconducting phases in a quasi-two-dimensional multilayer system without local inversion symmetry. Broken local inversion symmetry induces layer-dependent Rashba-type s…
Spin-Triplet Pairing State of Sr2RuO4 in the c-Axis Magnetic Field
Shuhei Takamatsu, Youichi Yanase
We investigate the spin-triplet superconducting state of Sr2RuO4 in the magnetic field along the c-axis on the basis of the four-component Ginzburg-Landau (GL) model with a weak sp…
Spin Susceptibility in Non-centrosymmetric Superconductors with Topological Transition of Fermi Surfaces
Daisuke Maruyama, Youichi Yanase
The non-centrosymmetric superconductors Li2Pd3B and Li2Pt3B show different superconducting properties despite having the same crystal symmetry. Motivated by experimental results, w…