23 citations · 63 across the 13 of their papers we have counts for
15 papers
Nonequilibrium Dirac condensate in bosonic Kitaev chain
Kazuki Yamamoto, Youichi Yanase
We explore a nonequilibrium Bose-Einstein condensate (BEC) in a bosonic Kitaev chain. Within a mean-field framework, we show that bosonic superfluid order develops once the pairing…
Linear and nonlinear Edelstein effects in Rashba superconductors
Hikaru Ueki, Youichi Yanase
We formulate a quasiclassical theory of the Edelstein effect in superconductors that incorporates both intraband and interband contributions. To describe the interband contribution…
Quantum geometry in correlated electron phases: from flat band to dispersive band
Taisei Kitamura, Akito Daido, Youichi Yanase
Quantum geometry, describing the geometric properties of the Bloch wave function in momentum space, has recently been recognized as a fundamental concept in condensed matter physic…
Quantum geometric magnetic monopole and two-phase superconductivity in CeRhAs
Kosuke Nogaki, Youichi Yanase
Recent angle-resolved photoemission spectroscopy (ARPES) and density functional theory plus Hubbard (DFT+) studies revealed that a heavy-fermion superconductor CeRhAs$_2…
Magnetic phase transitions driven by quantum geometry
Chang-geun Oh, Taisei Kitamura, Akito Daido +2
We explore how the quantum geometric properties of the Bloch wave function, characterized by the Hilbert-Schmidt quantum distance, impact magnetic phases in solid-state systems. To…
Anomalous Temperature Dependence of Quantum-Geometric Superfluid Weight
Yuma Hirobe, Taisei Kitamura, Youichi Yanase
The symmetry of Cooper pairs encodes key information about superconductivity and has been widely studied through the temperature dependence of the superfluid weight. However, in sy…
Superconducting Acoustogalvanic Effect in Twisted Transition Metal Dichalcogenides
Tsugumi Matsumoto, Ryotaro Sano, Youichi Yanase +1
Two-dimensional van der Waals superconductors are attracting much attention owing to their rich phase diagrams including possible unconventional superconductivity. However, they su…
Odd-parity magnetism by quantum geometry
Kanta Kudo, Youichi Yanase
We uncover a geometric mechanism of odd-parity multipole magnetism driven by the quantum metric of Bloch electrons. By analyzing spin and odd-parity multipole susceptibilities in a…
Quantum geometric ferromagnetism by singular saddle point
Taisei Kitamura, Hiroki Nakai, Akito Daido +1
We propose ferromagnetism that occurs in electrons at a saddle point with band touching, which we call the singular saddle point. At the singular saddle point, the divergent quantu…
Nonreciprocal Current-Induced Zero-Resistance State in Valley-Polarized Superconductors
Akito Daido, Youichi Yanase, K. T. Law
The recently observed nonreciprocal current-induced zero-resistance state (CIZRS) in twisted trilayer graphene/WSe heterostructure has posed a significant theoretical challenge…
Field-free superconducting diode effect in layered superconductor FeSe
Utane Nagata, Motomi Aoki, Akito Daido +7
The superconducting diode effect (SDE), where zero-resistance states appear nonreciprocally during current injection, is receiving tremendous interest in both fundamental and appli…
Field-induced superconductivity mediated by odd-parity multipole fluctuation
Kosuke Nogaki, Youichi Yanase
Field-induced superconductivity has long presented a counterintuitive phenomenon and a pivotal challenge in condensed matter physics. In this Letter, we introduce a mechanism for a…
Correlation-induced Fermi surface evolution and topological crystalline superconductivity in CeRh2As2
Jun Ishizuka, Kosuke Nogaki, Manfred Sigrist +1
Locally noncentrosymmetric structures in crystals are attracting much attention owing to emergent phenomena associated with the sublattice degree of freedom. The newly discovered h…
Quantum geometry encoded to pair potentials
Akito Daido, Taisei Kitamura, Youichi Yanase
Bloch wave functions of electrons have properties called quantum geometry, which has recently attracted much attention as the origin of intriguing physical phenomena. In this paper…
Coexistence of near-EF flat band and van Hove singularity in a two-phase superconductor
Xuezhi Chen, Le Wang, Jun Ishizuka +9
In quantum many-body systems, particularly, the ones with large near-EF density states, like flat bands or van Hove singularity (VHS), electron correlations often give rise to rich…