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Spin pumping reveals vortex-mediated angular-momentum dissipation at the superconducting transition
Maximilian Mangold, Alex Burg, Franz Weidenhiller +4
Spin pumping into superconductors is generally expected to become less efficient below the critical temperature because quasiparticle transport freezes out. Here we…
Electronic state of vortices at twin boundaries in a nematic superconductor
Keita Goto, Hiroto Adachi, Masanori Ichioka
Local electronic states of vortices in an s d wave nematic superconductor are studied both in the absence and presence of twin boundaries. The Bogoliubov-de Gennes theory for…
Fractional vortex array realized at twin boundary in a nematic superconductor
Sakiko Noda, Hiroto Adachi, Masanori Ichioka
Within a framework of two-component Ginzburg-Landau theory as a model of superconducting FeSe, we study the spatial structure of vortex states in the presence of nematic twin bound…
Dynamics of Topological Defects in Type-II Superconductors under Gradients of Temperature/Spin Density
Takuma Kanakubo, Hiroto Adachi, Masanori Ichioka +1
We theoretically investigate the motion of a domain wall and a vortex in type-II superconductors driven by inhomogeneities of temperature or spin accumulation. The model consists o…
Time-dependent Ginzburg-Landau theory of the vortex spin Hall effect
Hiroto Adachi, Yusuke Kato, Jun-ichiro Ohe +1
We develop a time-dependent Ginzburg-Landau theory of the vortex spin Hall effect, i.e., a spin Hall effect that is driven by the motion of superconducting vortices. For the direct…
Fluctuation contribution to Spin Hall Effect in Superconductors
Akimitsu Watanabe, Hiroto Adachi, Yusuke Kato
We theoretically study the contribution of superconducting fluctuation to extrinsic spin Hall effects in two- and three-dimensional electron gas and intrinsic spin Hall effects in…
Spin Hall effect generated by fluctuating vortices in type-II superconductors
Takuya Taira, Yusuke Kato, Masanori Ichioka +1
We theoretically investigate the vortex spin Hall effect, i.e., a novel spin Hall effect driven by the motion of superconducting vortices, by focusing on the role of superconductin…
Anomalous Thermal Conductivity of Semi-Metallic Superconductors with Electron-Hole Compensation
Hiroto Adachi, Manfred Sigrist
The effects of low carrier density and carrier compensation on mixed-state thermal transport are investigated beyond the quasiclassical approximation. It is shown that, contrary to…
Vortex state in a Fulde-Ferrell-Larkin-Ovchinnikov superconductor based on the quasiclassical theory
Masanori Ichioka, Hiroto Adachi, Takeshi Mizushima +1
We investigate the vortex state with Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) modulations suggested for a high field phase of CeCoIn_5. On the basis of the quasiclassical Eilenberge…
Quasi-Classical Calculation of the Mixed-State Thermal Conductivity in s-Wave and d-Wave Superconductors
Hiroto Adachi, Predrag Miranovic, Masanori Ichioka +1
To see how superconducting gap structures affect the longitudinal component of mixed-state thermal conductivity kappa_{xx}(B), the magnetic-field dependences of kappa_{xx}(B) in s-…
Comment on "Fluctuation-Driven First-Order Transition in Pauli-Limited -Wave Superconductors"
Ryusuke Ikeda, Hiroto Adachi
This is a Comment on a recent Letter (Phys.Rev.Lett.93, 247002 (2004)) written by Dalidovich and Yang. It is pointed out that any Pauli-limited approach neglecting the vortices is…
Anisotropic Diamagnetic Response in Type-II Superconductors with Gap and Fermi-Surface Anisotropies
H. Adachi, P. Miranović, M. Ichioka +1
Effects of anisotropic gap structures on a diamagnetic response are investigated in order to demonstrate that the field-angle-resolved magnetization () measurement can be u…
Modulated Vortex Lattice in High Fields and Gap Nodes
Ryusuke Ikeda, Hiroto Adachi
The mean field vortex phase diagram of a quasi two dimensional superconductor with a nodal d-wave pairing and with strong Pauli spin depairing is examined in the parallel field cas…
Effects of Pauli paramagnetism on superconducting vortex phase diagram in strong fields
Hiroto Adachi, Ryusuke Ikeda
The Ginzburg-Landau (GL) functional and the resultant phase diagram in strong fields where the Pauli paramagnetic depairing is not negligible are examined in details by assuming th…
Theoretical Description of Nearly Discontinuous Transition in Superconductors with Paramagnetic Depairing
Hiroto Adachi, Shigeru Koikegami, Ryusuke Ikeda
Based on a theoretical argument and Monte Carlo simulations of a Ginzburg-Landau model derived microscopically, it is argued that, in type-II superconductors where {\it both} the p…
Microscopic Study of Quantum Vortex-Glass Transition Field in Two-Dimensional Superconductors
Hideharu Ishida, Hiroto Adachi, Ryusuke Ikeda
The position of a field-tuned superconductor-insulator quantum transition occuring in disordered thin films is examined within the mean field approximation. Our calculation shows t…
Fluctuation Conductivity in Unconventional Superconductors near Critical Disorder
Hiroto Adachi, Ryusuke Ikeda
The fluctuation conductivity in bulk superconductors with non s-wave pairing and with nonmagnetic disorder of strength is studied at low and within the Gaussian…
Josephson-Vortex-Glass Transition in Strong Fields
Ryusuke Ikeda, Hiroto Adachi
A vortex-glass transition due to point disorder in layered superconductors is studied for the case with an applied field {\it parallel} to the layers. Our calculation of tilt respo…