516 citations · 5.8k across the 96 of their papers we have counts for
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Unconventional superconductivity on a topological insulator
Jacob Linder, Yukio Tanaka, Takehito Yokoyama +2
We study proximity-induced superconductivity on the surface of a topological insulator (TI), focusing on unconventional pairing. We find that the excitation spectrum becomes gaples…
Spin-polarized Josephson current in SFS junctions with inhomogeneous magnetization
Mohammad Alidoust, Jacob Linder, Gholamreza Rashedi +2
SHORTENED ABSTRACT: We study numerically the properties of spin- and charge-transport in a nanoscale diffusive superconductorferromagnetsuperconductor junction when the…
Anomalous magnetoresistance on the topological surface
Takehito Yokoyama, Yukio Tanaka, Naoto Nagaosa
We investigate charge transport in two-dimensional ferromagnet/feromagnet junction on a topological insulator. The conductance across the interface depends sensitively on the direc…
Manipulation of Majorana fermion, Andreev reflection and Josephson current on topological insulators
Yukio Tanaka, Takehito Yokoyama, Naoto Nagaosa
We study theoretically charge transport properties of normal metal (N) / ferromagnet insulator (FI) / superconductor (S) junction and S/FI/S junction formed on the surface of three…
Josephson current in graphene: the role of unconventional pairing symmetries
Jacob Linder, Annica M. Black-Schaffer, Takehito Yokoyama +2
We investigate the Josephson current in a graphene superconductor/normal/superconductor junction, where superconductivity is induced by means of the proximity effect from external…
Anomalous Finite Size Effects on Surface States in the Topological Insulator BiSe
Jacob Linder, Takehito Yokoyama, Asle Sudbø
We study how the surface states in the strong topological insulator BiSe are influenced by finite size effects, and compare our results with those recently obtained for 2D…
Tuning odd triplet superconductivity by spin pumping
Takehito Yokoyama, Yaroslav Tserkovnyak
We study proximity effect in diffusive ferromagnet/normal-metal/superconductor junction with precessing magnetization of the ferromagnet. We find that the odd-frequency pairing ind…
Theory of charge transport in ferromagnetic semiconductor/s-wave superconductor junction
Yoshihiro Mizuno, Takehito Yokoyama, Yukio Tanaka
We study tunneling conductance in ferromagnetic semiconductor/insulator/s-wave superconductor junction where Rashba spin-orbit interaction (RSOI) and exchange field are taken into…
Pure spin-current generated by reflection at a normal metal/2DEG interface
Jacob Linder, Takehito Yokoyama, Asle Sudbø
The concept of a spin-current is a useful tool in understanding spin-transport in hybrid systems, but its very definition is problematic in systems where spin-orbit coupling effect…
Spin-Transfer Torque and Magnetoresistance in Superconducting Spin-Valves
J. Linder, T. Yokoyama, A. Sudbø
We study the spin-transfer torque and magnetoresistance of a ferromagnetsuperconductorferromagnet spin-valve, allowing for an arbitrary magnetization misorientation and…
Theory of pairing symmetry in Fulde-Ferrell-Larkin-Ovchinnikov vortex state and vortex lattice
Takehito Yokoyama, Masanori Ichioka, Yukio Tanaka
We investigate pairing symmetry in the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) vortex state and vortex lattice, and explain the electronic structure in these states in terms of pai…
Pairing symmetry conversion by spin-active interfaces in superconducting junctions
Jacob Linder, Takehito Yokoyama, Asle Sudbø +1
We study the proximity-induced superconducting correlations in a normal metal connected to a superconductor when the interface between them is spin-active and the normal metal is b…
Theory of superconducting and magnetic proximity effect in SF structures with inhomogeneous magnetization textures and spin-active interfaces
Jacob Linder, Takehito Yokoyama, Asle Sudbø
We present a study of the proximity effect and the inverse proximity effect in a superconductorferromagnet bilayer, taking into account several important factors which mostly…
Tunneling conductance and local density of states in time-reversal symmetry breaking superconductors under the influence of an external magnetic field
Mihail A. Silaev, Takehito Yokoyama, Jacob Linder +2
We consider different effects that arise when time-reversal symmetry breaking superconductors are subjected to an external magnetic field, thus rendering the superconductor to be i…
Giant spin rotation in the normal metal/quantum spin Hall junction
Takehito Yokoyama, Yukio Tanaka, Naoto Nagaosa
We study theoretically reflection problem in the junction between a normal metal and an insulator characterized by a parameter , which is a usual insulator for or a quantu…