180 citations · 757 across the 20 of their papers we have counts for
20 papers
Electron-Hole Scattering Dichotomy and Anisotropic Warping in Quasi-Two-Dimensional Fermi Surfaces of UTe2
Motoi Kimata, Jun Ishizuka, Freya Husstedt +13
We present a combined experimental and theoretical study of the detailed Fermi-surface (FS) geometry of UTe2, a heavy-fermion superconductor that has recently attracted considerabl…
Field-angle dependence of magnetoresistance in UTe2
Jun Ishizuka, Youichi Yanase
We theoretically study angle-resolved magnetoresistance under rotated magnetic field in the normal state of a spin-triplet superconductor UTe. The Wannier model derived from a…
Magnetic edge fields in UTe near zero background fields
Yusuke Iguchi, Huiyuan Man, S. M. Thomas +5
Chiral superconductors are theorized to exhibit spontaneous edge currents. Here, we found magnetic fields at the edges of UTe, a candidate odd-parity chiral superconductor, tha…
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…
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…
de Haas-van Alphen Oscillations for the Field Along c-axis in UTe2
Dai Aoki, Ilya Sheikin, Alix McCollam +5
We performed de Haas-van Alphen (dHvA) experiments in the spin-triplet superconductor UTe2 for magnetic field along the c-axis above 15T. Three fundamental dHvA frequencies, named…
First Observation of de Haas-van Alphen Effect and Fermi Surfaces in Unconventional Superconductor UTe2
Dai Aoki, Hironori Sakai, Petr Opletal +11
We report the first observation of the de Haas-van Alphen (dHvA) effect in the novel spin-triplet superconductor UTe2 using high quality single crystals with the high residual resi…
Field-free superconducting diode effect in noncentrosymmetric superconductor/ferromagnet multilayers
Hideki Narita, Jun Ishizuka, Ryo Kawarazaki +8
The diode effect is fundamental to electronic devices and is widely used in rectifiers and AC-DC converters. At low temperatures, however, conventional semiconductor diodes possess…
Superconductivity in monolayer FeSe enhanced by quantum geometry
Taisei Kitamura, Tatsuya Yamashita, Jun Ishizuka +2
We formulate the superfluid weight in unconventional superconductors with -dependent Cooper pair potentials based on the geometric properties of Bloch electrons. We apply th…
Magnetic Properties under Pressure in Novel Spin-Triplet Superconductor UTe2
Dexin Li, Ai Nakamura, Fuminori Honda +8
We report the magnetic susceptibility and the magnetization under pressures up to 1.7GPa above the critical pressure, Pc ~ 1.5GPa, for H // a, b, c-axes in the novel spin triplet s…
Topological crystalline superconductivity in locally noncentrosymmetric CeRhAs
Kosuke Nogaki, Akito Daido, Jun Ishizuka +1
Recent discovery of superconductivity in CeRhAs clarified an unusual - phase diagram with two superconducting phases [Khim et al. arXiv:2101.09522]. The experimental…
Thermodynamic electric quadrupole moments of nematic phases from first-principles calculation
Taisei Kitamura, Jun Ishizuka, Akito Daido +1
The electronic nematic phase emerging with spontaneous rotation symmetry breaking is a central issue of modern condensed matter physics. In particular, various nematic phases in ir…
Periodic Anderson model for magnetism and superconductivity in UTe2
Jun Ishizuka, Youichi Yanase
We provide and analyze a periodic Anderson model for studying magnetism and superconductivity in UTe, a recently-discovered candidate for a topological spin-triplet superconduc…
Insulator-metal transition and topological superconductivity in UTe2 from a first-principles calculation
Jun Ishizuka, Shuntaro Sumita, Akito Daido +1
We theoretically study superconductivity in UTe, which is a recently-discovered strong candidate for an odd-parity spin-triplet superconductor. Theoretical studies for this com…
Odd-parity multipole fluctuation and unconventional superconductivity in locally noncentrosymmetric crystal
Jun Ishizuka, Youichi Yanase
A microscopic calculation and symmetry argument reveal superconductivity in the vicinity of parity-violating magnetic order. An augmented cluster magnetic multipole order in a crys…
Fermi surface, pressure-induced antiferromagnetic order, and superconductivity in FeSe
Jun Ishizuka, Takemi Yamada, Yuki Yanagi +1
The pressure dependence of the structural (), antiferromagnetic (), and superconducting () transition temperatures in FeSe is investigated on the basis of the 16-ban…
Hole- State Induced by Coexisting Ferro- and Aniferromagnetic and Aniferro-orbital Fluctuations in the Iron Pnictides
Jun Ishizuka, Takemi Yamada, Yuki Yanagi +1
The multi-orbital Hubbard model is investigated in order to clarify the electron correlation effects and the superconductivity in the iron-based superconductor. The renormalization…
A High-Tc Mechanism of Iron Pnictide Superconductivity due to Cooperation of Ferro-orbital and Antiferromagnetic Fluctuations
Takemi Yamada, Jun Ishizuka, Yoshiaki Ōno
The electronic states and superconductivity in iron pnictides are studied on the basis of the 16 band - model which includes both the onsite Coulomb interaction between Fe $d…
Local correlation effects on the s+-- and s++-wave superconductivities mediated by magnetic and orbital fluctuations in the 5-orbital Hubbard model for iron pnictides
Jun Ishizuka, Takemi Yamada, Yuki Yanagi +1
We investigate the electronic state and the superconductivity in the 5-orbital Hubbard model for iron pnictides by using the dynamical mean-field theory in conjunction with the Eli…
Metal-insulator transition and superconductivity in the two-orbital Hubbard-Holstein model for iron-based superconductors
Takemi Yamada, Jun Ishizuka, Yoshiaki Ōno
We investigate a two-orbital model for iron-based superconductors to elucidate the effect of interplay between electron correlation and Jahn-Teller electron-phonon coupling by usin…