Kyoto University

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710 papers · 1 filter

cond-mat.supr-con2025

Composition-Based Machine Learning for Screening Superconducting Ternary Hydrides from a Curated Dataset

Kazuaki Tokuyama, Souta Miyamoto, Taichi Masuda +1

We present an ensemble machine-learning approach for composition-based, structure-agnostic screening of candidate superconductors among ternary hydrides under high pressure. Hydrog…

cond-mat.supr-con2025★ 2 cited

Conventional $s$ -wave Superconductivity in LaRh $_{2}$ As $_{2}$ ; the Analog without the 4 $f$ Electrons of CeRh $_{2}$ As $_{2}$

Shiki Ogata, Shunsaku Kitagawa, Kenji Ishida +4

Superconductor LaRh $_{2}$ As $_{2}$ has the same crystal structures as CeRh $_{2}$ As $_{2}$ , which exhibits superconducting (SC) multiphase in the $c$ -axis magnetic field. Although the SC tran…

cond-mat.supr-con2025★ 2 cited

Muon Knight shift as a precise probe of the superconducting symmetry of Sr $_{2}$ RuO $_{4}$

Hisakazu Matsuki, Rustem Khasanov, Jonas A. Krieger +8

Muon spin rotation ( $μ$ SR) measurements of internal magnetic field shifts, known as the muon Knight shift, is used for determining pairing symmetries in superconductors. While this…

cond-mat.supr-con2025★ 3 cited

Nonlocal Josephson diode effect in minimal Kitaev chains

Jorge Cayao, Masatoshi Sato

We study the emergence of the nonlocal Josephson effect in a system composed of three laterally coupled minimal Kitaev chains and exploit it to realize the nonlocal Josephson diode…

cond-mat.supr-con2025

Giant critical current peak induced by pressure in kagome superconductor RbV $_{3}$ Sb $_{5}$

Lingfei Wang, Wenyan Wang, Tsz Fung Poon +11

Superconductivity can coexist or compete with other orders such as magnetism or density waves. Optimizing superconductivity requires identifying competing orders that may disrupt C…

cond-mat.supr-con2025

Superconducting Properties on Two-dimensional Quasicrystal (Ta $_{0.95}$ Cu $_{0.05}$ ) $_{1.6}$ Te Studied with $^{125}$ Te-NMR

H. Matsudaira, S. Kitagawa, K. Ishida +3

Physical properties in the normal and superconducting (SC) state are investigated with $^{125}$ Te-nuclear magnetic resonance (NMR) measurements in a quasicrystal $\mathrm{(Ta_{0.95…

cond-mat.supr-con2025

Quantum geometric magnetic monopole and two-phase superconductivity in CeRh $_{2}$ As $_{2}$

Kosuke Nogaki, Youichi Yanase

Recent angle-resolved photoemission spectroscopy (ARPES) and density functional theory plus Hubbard $U$ (DFT+ $U$ ) studies revealed that a heavy-fermion superconductor CeRh $_{2}$ As$_2…

cond-mat.supr-con2025

Quasiclassical theory of vortex states in locally non-centrosymmetric superconductors: application to CeRh $_{2}$ As $_{2}$

Akihiro Minamide, Youichi Yanase

CeRh $_{2}$ As $_{2}$ , a heavy fermion superconductor discovered in 2021, exhibits two distinct superconducting phases under a $c$ -axis magnetic field. This unconventional phase diagr…

cond-mat.supr-con2025★ 3 cited

Direct evidence for the absence of coupling between shear strain and superconductivity in Sr2RuO4

Giordano Mattoni, Thomas Johnson, Atsutoshi Ikeda +4

The superconducting symmetry of Sr2RuO4 has been intensely debated for many years. A crucial controversy recently emerged between shear-mode ultrasound experiments, which suggest a…

cond-mat.supr-con2025

Observation of the crossover from quantum fluxoid to half-quantum fluxoid in a chiral superconducting device

Masashi Tokuda, Fumiya Matsumoto, Noriaki Maeda +16

Topological superconductors are one of the intriguing material groups from the viewpoint of not only condensed matter physics but also industrial application such as quantum comput…

cond-mat.supr-con2025

Quasiparticle interaction originating from Bogoliubov Fermi Surfaces under pressure in 18%-S substituted FeSe studied via NMR

Zhongyu Yu, Xiaoling Shen, Koya Nakamura +8

S-substituted FeSe superconductors in the tetragonal phase display several unique features among iron-based superconductors, particularly the presence of zero-energy excitations in…

cond-mat.supr-con2025★ 3 cited

Non-Hermitian Josephson junctions with four Majorana zero modes

Jorge Cayao, Masatoshi Sato

Josephson junctions formed by finite-length topological superconductors host four Majorana zero modes when the phase difference between the superconductors is $φ = π$ and their lengt…

cond-mat.supr-con2025★ 4 cited

Uniform electronic states and $s$ -wave superconductivity in a strongly disordered high-entropy compound (RuRhPdIr) $_{0.6}$ Pt $_{0.4}$ Sb

Yufu Yamada, Shunsaku Kitagawa, Taishi Ihara +4

High-entropy compounds, where multiple elements occupy a single crystallographic site in a highly disordered manner, challenge conventional understandings of electronic structure b…

cond-mat.supr-con2025★ 4 cited

Impact of charge-density-wave pattern on the superconducting gap in V-based kagome superconductors

T. Nagashima, K. Ishihara, Y. Yamakawa +12

Kagome metals $A$ V $_{3}$ Sb $_{5}$ ( $A =$ K, Rb, Cs) provide a compelling platform to explore the interplay between superconductivity (SC) and charge-density-wave (CDW) orders. While dist…

cond-mat.supr-con2025

In-plane and interlayer magnetoresistance in FeSe

Taichi Terashima, Shinya Uji, Hiroaki Ikeda +3

We report measurements of the in-plane and interlayer magnetoresistances of FeSe. The in-plane magnetoresistance $Δ ρ_{ab} / ρ_{ab} (0)$ for $B ∥ c$ is positive below $T_{s}$ and…

cond-mat.supr-con2025★ 1 cited

Superconducting Diode Effect in Weak Localization Regime

Naratip Nunchot, Youichi Yanase

We study a dirty two-dimensional superconductor with Rashba spin-orbit coupling and in-plane Zeeman fields described by the nonlinear sigma model that includes the Cooper and long-…

cond-mat.supr-con2025★ 1 cited

Supercurrent-induced antiferromagnetic order and spin-triplet pair generation in quantum critical d-wave superconductors

Kyohei Nakamura, Youichi Yanase

A supercurrent is well recognized as being of prime importance within mean-field theory, but remains largely unexplored in strongly correlated electron systems (SCES) and the quant…

cond-mat.supr-con2025★ 1 cited

Superconducting critical temperature and dimensionality tuning of RbV $_{3}$ Sb $_{5}$ via biaxial strain

Tsz Fung Poon, King Yau Yip, Ying Kit Tsui +10

Kagome metal AV $_{3}$ Sb $_{5}$ (A=K, Rb, Cs) has emerged as an intriguing platform for exploring the interplay between superconductivity and other quantum states. Among the three compou…

cond-mat.supr-con2025

Magnetic Field Dependence of the Spin Susceptibility on Conventional s-wave Superconductor LaRu $_{4}$ P $_{12}$ Revealed by $^{31}$ P-NMR and $^{139}$ La-NMR

Riku Matsubayashi, Shiki Ogata, Taishi Ihara +6

The magnetic field dependence of the spin part of Knight shift, which is proportional to the superconducting-state spin susceptibility, was investigated at two nuclear sites, $^{31…

cond-mat.supr-con2025★ 2 cited

$b$ -axis and $c$ -axis Knight shift measurements in the superconducting state on ultraclean UTe $_{2}$ with $T_{c}$ = 2.1 K

Hiroki Matsumura, Yuki Takahashi, Katsuki Kinjo +12

Knight shifts along the $b$ and $c$ axes ( $K_{b}$ and $K_{c}$ ) at two crystallographically distinct Te sites were measured down to 70 mK using $^{125}$ Te nuclear magnetic resonance (NM…

cond-mat.supr-con2025

Born-limit scattering and pair-breaking crossover in d-wave superconductivity of (TMTSF)2ClO4

Shota Yano, Kazumi Fukushima, Katsuki Kinjo +8

In the quasi-one-dimensional organic unconventional superconductor (TMTSF)2ClO4, the randomness of the non-centrosymmetric ClO4 anions can be experimentally controlled by adjusting…

cond-mat.supr-con2025★ 6 cited

Intrinsic low-temperature magnetic properties on the ultra-clean UTe $_{2}$ with $T_{c}$ = 2.1 K revealed by $^{125}$ Te NMR

Hiroki Matsumura, Shunsaku Kitagawa, Shiki Ogata +14

To investigate the intrinsic magnetic properties of UTe $_{2}$ , we performed $^{125}$ Te-NMR measurements on the ultra-clean single-crystalline UTe $_{2}$ with superconducting transition…

cond-mat.supr-con2025★ 2 cited

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 $_{2}$ heterostructure has posed a significant theoretical challenge…

cond-mat.supr-con2025★ 7 cited

Apparent nonreciprocal transport in FeSe bulk crystals

Taichi Terashima, Shinya Uji, Yuji Matsuda +2

We performed low-frequency ac first- and second-harmonic resistance measurements and dc $I - V$ measurements on bulk FeSe crystals in a temperature range between 1.8 and 150 K and in…

Composition-Based Machine Learning for Screening Superconducting Ternary Hydrides from a Curated Dataset

Conventional s-wave Superconductivity in LaRh2​As2​; the Analog without the 4f Electrons of CeRh2​As2​

Muon Knight shift as a precise probe of the superconducting symmetry of Sr2​RuO4​

Nonlocal Josephson diode effect in minimal Kitaev chains

Giant critical current peak induced by pressure in kagome superconductor RbV3​Sb5​

Superconducting Properties on Two-dimensional Quasicrystal (Ta0.95​Cu0.05​)1.6​Te Studied with 125Te-NMR

Quantum geometric magnetic monopole and two-phase superconductivity in CeRh2​As2​

Quasiclassical theory of vortex states in locally non-centrosymmetric superconductors: application to CeRh2​As2​

Direct evidence for the absence of coupling between shear strain and superconductivity in Sr2RuO4

Observation of the crossover from quantum fluxoid to half-quantum fluxoid in a chiral superconducting device

Quasiparticle interaction originating from Bogoliubov Fermi Surfaces under pressure in 18%-S substituted FeSe studied via NMR

Non-Hermitian Josephson junctions with four Majorana zero modes

Uniform electronic states and s-wave superconductivity in a strongly disordered high-entropy compound (RuRhPdIr)0.6​Pt0.4​Sb

Impact of charge-density-wave pattern on the superconducting gap in V-based kagome superconductors

In-plane and interlayer magnetoresistance in FeSe

Superconducting Diode Effect in Weak Localization Regime

Supercurrent-induced antiferromagnetic order and spin-triplet pair generation in quantum critical d-wave superconductors

Superconducting critical temperature and dimensionality tuning of RbV3​Sb5​ via biaxial strain

Magnetic Field Dependence of the Spin Susceptibility on Conventional s-wave Superconductor LaRu4​P12​ Revealed by 31P-NMR and 139La-NMR

b-axis and c-axis Knight shift measurements in the superconducting state on ultraclean UTe2​ with Tc​ = 2.1 K

Born-limit scattering and pair-breaking crossover in d-wave superconductivity of (TMTSF)2ClO4

Intrinsic low-temperature magnetic properties on the ultra-clean UTe2​ with Tc​ = 2.1 K revealed by 125Te NMR

Nonreciprocal Current-Induced Zero-Resistance State in Valley-Polarized Superconductors

Apparent nonreciprocal transport in FeSe bulk crystals

Conventional $s$ -wave Superconductivity in LaRh $_{2}$ As $_{2}$ ; the Analog without the 4 $f$ Electrons of CeRh $_{2}$ As $_{2}$

Muon Knight shift as a precise probe of the superconducting symmetry of Sr $_{2}$ RuO $_{4}$

Giant critical current peak induced by pressure in kagome superconductor RbV $_{3}$ Sb $_{5}$

Superconducting Properties on Two-dimensional Quasicrystal (Ta $_{0.95}$ Cu $_{0.05}$ ) $_{1.6}$ Te Studied with $^{125}$ Te-NMR

Quantum geometric magnetic monopole and two-phase superconductivity in CeRh $_{2}$ As $_{2}$

Quasiclassical theory of vortex states in locally non-centrosymmetric superconductors: application to CeRh $_{2}$ As $_{2}$

Uniform electronic states and $s$ -wave superconductivity in a strongly disordered high-entropy compound (RuRhPdIr) $_{0.6}$ Pt $_{0.4}$ Sb

Superconducting critical temperature and dimensionality tuning of RbV $_{3}$ Sb $_{5}$ via biaxial strain

Magnetic Field Dependence of the Spin Susceptibility on Conventional s-wave Superconductor LaRu $_{4}$ P $_{12}$ Revealed by $^{31}$ P-NMR and $^{139}$ La-NMR

$b$ -axis and $c$ -axis Knight shift measurements in the superconducting state on ultraclean UTe $_{2}$ with $T_{c}$ = 2.1 K

Intrinsic low-temperature magnetic properties on the ultra-clean UTe $_{2}$ with $T_{c}$ = 2.1 K revealed by $^{125}$ Te NMR