63 citations · 340 across the 21 of their papers we have counts for
22 papers
Non-volatile Orbital magnetoelectric effect in a two-dimensional electron gas
Yu Chen, Martando Rath, Julien Brehin +10
Electrical control of orbital magnetism is a central goal of orbitronics. While current-induced orbital polarization has recently been demonstrated in inversion-asymmetric systems,…
Spin-polarized Josephson current induced by inhomogeneous altermagnetic interlayers
Wenjun Zhao, Yuri Fukaya, Pablo Burset +3
The pursuit of dissipationless spin supercurrents is a central theme in superconducting spintronics. We propose a field-free Josephson junction using an inhomogeneous altermagnetic…
Directional Andreev-Reflection Signatures of Inter-Orbital Pairing in SrRuO
G. Csire, Y. Fukaya, M. Cuoco +6
Unconventional superconductivity in quasi--two-dimensional systems is commonly identified through the emergence of Andreev bound states (ABS) at in-plane edges, while surfaces perp…
Bogoliubov flat bands in twisted layered materials
Keiji Yada, Yuri Fukaya, Yukio Tanaka
Flat bands have attracted considerable interest in condensed matter physics because they provide a fertile platform for realizing strongly correlated and topological quantum phases…
-wave superconductivity and Josephson current in -wave unconventional magnet/-wave superconductor hybrid systems
Yuri Fukaya, Keiji Yada, Yukio Tanaka
We study the surface density of states in -wave unconventional magnet-spin-singlet -wave superconductor hybrid systems (-wave unconventional magnetic superconductors). Owi…
Crossed surface flat bands in three-dimensional superconducting altermagnets
Yuri Fukaya, Bo Lu, Keiji Yada +2
Superconducting altermagnets have proven to be a promising ground for emergent phenomena, but their study has involved two-dimensional systems. In this work, we investigate three-d…
Engineering subgap states in superconductors by the symmetry of altermagnetism
Bo Lu, Phillip Mercebach, Pablo Burset +4
Combining superconducting and magnetic materials is a promising path to generate exotic interface subgap states. In this regard, altermagnetism is particularly interesting because…
Tunneling conductance in superconducting junctions with -wave unconventional magnets breaking time-reversal symmetry
Yuri Fukaya, Keiji Yada, Yukio Tanaka
A new type of magnet called -wave unconventional magnet is proposed, stimulated by the discovery of altermagnet. We study the tunneling conductance of -wave unconventional ma…
Superconducting phenomena in systems with unconventional magnets
Yuri Fukaya, Bo Lu, Keiji Yada +2
In this work we review the recent advances on superconducting phenomena in junctions formed by superconductors and unconventional magnets. Conventional magnets, such as ferromagnet…
Orientation-dependent transport in junctions formed by -wave altermagnets and -wave superconductors
Wenjun Zhao, Yuri Fukaya, Pablo Burset +3
We investigate de Gennes-Saint-James states and Josephson effect in hybrid junctions based on -wave altermagnet and -wave superconductor. Even though these states are associa…
Classification of pair symmetries in superconductors with unconventional magnetism
Kazuki Maeda, Yuri Fukaya, Keiji Yada +3
We consider unconventional magnets with proximity-induced superconductivity and investigate the emergence of superconducting correlations by carrying out a full classification of a…
Josephson effect and odd-frequency pairing in superconducting junctions with unconventional magnets
Yuri Fukaya, Kazuki Maeda, Keiji Yada +3
We consider Josephson junctions formed by coupling two conventional superconductors via an unconventional magnet and investigate the formation of Andreev bound states, their impact…
Supercurrent diode with high winding vortex
Yuri Fukaya, Maria Teresa Mercaldo, Daniel Margineda +5
Nonreciprocal supercurrent refers to the phenomenon where the maximum dissipationless current in a superconductor depends on its direction of flow. This asymmetry underlies the ope…
Back-action supercurrent diodes
Daniel Margineda, Alessandro Crippa, Elia Strambini +8
Back-action refers to a response that retro-acts on a system to tailor its properties with respect to an external stimulus. This effect is at the heart of many electronic devices s…
Sign reversal diode effect in superconducting Dayem nanobridges
Daniel Margineda, Alessandro Crippa, Elia Strambini +4
Supercurrent diodes are nonreciprocal electronic elements whose switching current depends on their flow direction. Recently, a variety of composite systems combining different mate…
Particle-hole spectral asymmetry at the edge of multiorbital noncentrosymmetric superconductors
Yuri Fukaya, Keiji Yada, Yukio Tanaka +2
Bogoliubov quasiparticles are a coherent electron-hole quantum superposition which typically, for time-reversal symmetric superconductors, exhibit a spectral distribution with part…
Anomalous Josephson Coupling and High-Harmonics in Non-Centrosymmetric Superconductors with -wave Spin-Triplet Pairing
Yuri Fukaya, Yukio Tanaka, Paola Gentile +2
We study the Josephson effects arising in junctions made of non-centrosymmetric superconductors with spin-triplet pairing having -wave orbital-singlet symmetry. We demonstrate t…
Spin susceptibility for orbital-singlet Cooper pair in the three-dimensional SrRuO superconductor
Yuri Fukaya, Tatsuki Hashimoto, Masatoshi Sato +2
We study the spin susceptibility of the orbital-singlet pairings, including the spin-triplet/orbital-singlet/-wave representation proposed by Suh \textit{et al}., [H.\ G.\…
Orbital tunable 0- transitions in Josephson junctions with noncentrosymmetric topological superconductors
Yuri Fukaya, Yada Keiji, Yukio Tanaka +2
We investigate the Josephson transport properties in a Josephson junction consisting of a conventional -wave superconductor coupled to a multi-orbital noncentrosymmetric superco…
Spin-Orbital Hallmarks of Unconventional Superconductors Without Inversion Symmetry
Yuri Fukaya, Shun Tamura, Keiji Yada +3
The spin-orbital polarization of superconducting excitations in momentum space is shown to provide distinctive marks of unconventional pairing in the presence of inversion symmetry…
Inter-orbital topological superconductivity in spin-orbit coupled superconductors with inversion symmetry breaking
Yuri Fukaya, Shun Tamura, Keiji Yada +3
We study the superconducting state of multi-orbital spin-orbit coupled systems in the presence of an orbitally driven inversion asymmetry assuming that the inter-orbital attraction…
Pairing mechanism of unconventional superconductivity in doped Kane-Mele model
Yuri Fukaya, Keiji Yada, Ayami Hattori +1
We study the pairing symmetry of a doped Kane-Mele model on a honeycomb lattice with on-site Coulomb interaction. The pairing instability of Cooper pair is calculated based on the…