98 citations · 387 across the 22 of their papers we have counts for
22 papers
Chirality Detection through Vortex Bound States in ()-Wave Superconductor
Soma Yoshida, Yukio Tanaka, Alexander A. Golubov +1
We present a method for detecting the chirality of a ()-wave superconductor through the analysis of the local density of states (LDOS) at the vortex core. Emp…
Chiral Current Inversion Induced by Flat-Band Andreev Bound States
Shu-Ichiro Suzuki, Alexander A. Golubov, Matthias Eschrig
We study the spontaneous chiral surface current circulating in a three-dimensional disk of a chiral superconductor (SC) utilizing the quasiclassical Eilenberger theory. We obtain s…
Robustness of chiral surface current and subdominant -wave Cooper pairs
Shu-Ichiro Suzuki, Alexander A. Golubov
The robustness of the chiral surface current of chiral superconductors against surface roughness is studied utilizing the quasiclassical Eilenberger theory. We consider the general…
Fulde-Ferrell-Larkin-Ovchinnikov state in a superconducting thin film attached to a ferromagnetic cluster
Shu-Ichiro Suzuki, Takumi Sato, Alexander A. Golubov +1
We study theoretically the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) states appearing locally in a superconducting thin film with a small circular magnetic cluster. The pair potentia…
Supercurrent reversal in Zeeman-split Josephson junctions
Shu-Ichiro Suzuki, Yasuhiro Asano, Alexander A. Golubov
We study theoretically the shape of the current-phase relation in a Josephson junction comprising the Zeeman-split superconductors (ZSs) and a normal metal (N). We show that at low…
Multiple Andreev reflections in two-dimensional Josephson junctions with broken time-reversal symmetry
Linde A. B. Olde Olthof, Stijn R. de Wit, Shu-Ichiro Suzuki +3
Andreev bound states (ABS) occur in Josephson junctions when the total phase of the Andreev and normal reflections is a multiple of . In ballistic junctions with an applied vol…
Vortex supercurrent inversion by frequency-symmetry conversion of Cooper pairs
Soma Yoshida, Shu-Ichiro Suzuki, Yukio Tanaka
We theoretically demonstrate that the vortex supercurrent can be reversed by odd-frequency Cooper pairs accompanied by surface Andreev bound states. The surface of a three-dimensio…
Destruction of surface states of ()-wave superconductor by surface roughness: application to SrRuO
Shu-Ichiro Suzuki, Satoshi Ikegaya, Alexander A. Golubov
The fragility of the chiral surface current of ()-wave superconductor, a potential candidate for SrRuO, against surface roughness is demonstrated utilizing…
Quasiparticle spectrum in mesoscopic superconducting junctions with weak magnetization
Shu-Ichiro Suzuki, Alexander A. Golubov, Yasuhiro Asano +1
We theoretically investigate the effects of the weak magnetization on the local density of states of mesoscopic proximity structures, where two superconducting terminals are attach…
An odd-frequency Cooper pair around a magnetic impurity
Shu-Ichiro Suzuki, Takumi Sato, Yasuhiro Asano
The Yu-Shiba-Rusinov (YSR) state appears as a bound state of a quasiparticle at a magnetic atom embedded in a superconductor. We discuss why the YSR state has energy below the supe…
Fingerprints of possible even-parity superconducting states in SrRuO detected by planar tunneling spectroscopy
Satoshi Ikegaya, Shu-Ichiro Suzuki, Yukio Tanaka +1
After more than 25 years of research, three even-parity superconducting states -- the -wave, -wave, and -wave states -- have emerged as leading candidates for the…
Anomalous inverse proximity effect in unconventional-superconductor junctions
Shu-Ichiro Suzuki, Takashi Hirai, Matthias Eschrig +1
We investigate the effects of Andreev bound states due to the unconventional pairing on the inverse proximity effect of ferromagnet/superconductor junctions. Utilizing quasiclassic…
Tunnelling conductance of -wave superconductor
Yuhi Takabatake, Shu-Ichiro Suzuki, Yukio Tanaka
We theoretically investigate the tunneling conductance of the -wave superconductor which is recently proposed to be realised at the (110) surface of a high- cuprate supe…
Identifying possible pairing states in SrRuO by tunneling spectroscopy
Shu-Ichiro Suzuki, Masatoshi Sato, Yukio Tanaka
We examine the tunneling spectroscopy of three-dimensional normal-metal/SrRuO junctions as an experimental means to identify pairing symmetry in SrRuO. In particula…
Effects of the phase coherence on the local density of states in superconducting proximity structures
Shu-Ichiro Suzuki, Alexander A. Golubov, Yasuhiro Asano +1
We theoretically study the local density of states in superconducting proximity structure where two superconducting terminals are attached to a side surface of a normal-metal wire.…
Theory of tunneling spectroscopy of normal metal/ferromagnet/spin-triplet superconductor junctions
L. A. B. Olde Olthof, S. -I. Suzuki, A. A. Golubov +4
We study the tunneling conductance of a ballistic normal metal / ferromagnet / spin-triplet superconductor junction using the extended Blonder-Tinkham-Klapwijk formalism as a model…
Local density of states in two-dimensional topological superconductors under a magnetic field: signature of an exterior Majorana bound state
Shu-Ichiro Suzuki, Yuki Kawaguchi, Yukio Tanaka
We study quasiparticle states on a surface of a topological insulator (TI) with proximity-induced superconductivity under an external magnetic field. An applied magnetic field crea…
Quantization of Conductance Minimum and Index Theorem
Satoshi Ikegaya, Shu-Ichiro Suzuki, Yukio Tanaka +1
We discuss the minimum value of the zero-bias differential conductance in a junction consisting of a normal metal and a nodal superconductor preserving time-reve…
Spontaneous edge current in a small chiral superconductor with a rough surface
Shu-Ichiro Suzuki, Yasuhiro Asano
We study theoretically the spontaneous edge current in a small chiral superconductor with surface roughness. We obtained self-consistent solutions of the pair potential and the vec…
Effects of surface roughness on the paramagnetic response of small unconventional superconductors
Shu-Ichiro Suzuki, Yasuhiro Asano
We theoretically study effects of surface roughness on the magnetic response of small unconventional superconductors by solving the Eilenberger equation for the quassiclassical Gre…
Paramagnetic instability of small topological superconductors
Shu-Ichiro Suzuki, Yasuhiro Asano
Although the diamagnetism is of the essence in the superconducting phenomena, small enough topological (or unconventional) superconductors are paramagnetic. By solving the quasicla…
Block magnetism coupled with local distortion in the iron-based spin-ladder compound BaFe2Se3
Yusuke Nambu, Kenya Ohgushi, Shunpei Suzuki +8
Magnetism in the insulating BaFeSe was examined through susceptibility, specific heat, resistivity and neutron diffraction measurements. After formation of a short-range ma…