294 citations · 1k across the 19 of their papers we have counts for
19 papers
Extended strange metal regime in a pure nematic quantum critical superconductor
Kousuke Ishida, Kiyotaka Mukasa, Shusaku Imajo +12
High-temperature superconductivity often emerges from a strange metallic state, where the electrical resistivity exhibits a linear-in-temperature dependence over an anomalously ext…
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…
Development of microwave surface elastoresistivity measurement technique under tunable strain
Suguru Hosoi, Kohei Matsuura, Masaaki Shimozawa +3
By integrating a dielectric microwave resonator with a piezoelectric-based strain device, we develop an in situ strain-tunable microwave spectroscopy technique that enables contact…
Spin fluctuations from Bogoliubov Fermi surfaces in the superconducting state of S-substituted FeSe
Zhongyu Yu, Koya Nakamura, Kazuya Inomata +9
The study of the iron-based superconductor, FeSe, has resulted in various topics, such as the interplay among superconductivity, nematicity, and magnetism, Bardeen-Cooper-Schrieffe…
Two superconducting states with broken time-reversal symmetry in FeSe1-xSx
K. Matsuura, M. Roppongi, M. Qiu +25
Iron-chalcogenide superconductors FeSeS possess unique electronic properties such as non-magnetic nematic order and its quantum critical point. The nature of supercondu…
All-microwave manipulation of superconducting qubits with a fixed-frequency transmon coupler
Shotaro Shirai, Yuta Okubo, Kohei Matsuura +3
All-microwave control of fixed-frequency superconducting quantum computing circuits is advantageous for minimizing the noise channels and wiring costs. Here we introduce a swap int…
Pure nematic quantum critical point accompanied by a superconducting dome
K. Ishida, Y. Onishi, M. Tsujii +8
When a symmetry-breaking phase of matter is suppressed to a quantum critical point (QCP) at absolute zero, quantum-mechanical fluctuations proliferate. Such fluctuations can lead t…
Enhanced superconducting pairing strength near a nonmagnetic nematic quantum critical point
K. Mukasa, K. Ishida, S. Imajo +14
The quest for high-temperature superconductivity at ambient pressure is a central issue in physics. In this regard, the relationship between unconventional superconductivity and th…
Pressure-induced reconstitution of Fermi surfaces and spin fluctuations in S-substituted FeSe
T. Kuwayama, K. Matsuura, J. Gouchi +8
FeSe is a unique high- iron-based superconductor in which nematicity, superconductivity, and magnetism are entangled with each other in the - phase diagram. We performed…
Thermodynamics of transition to BCS-BEC crossover superconductivity in FeSeS
Y. Mizukami, M. Haze, O. Tanaka +7
The BCS-BEC crossover from strongly overlapping Cooper pairs to non-overlapping composite bosons in the strong coupling limit has been a long-standing issue of interacting many-bod…
Non-Fermi liquid transport in the vicinity of nematic quantum critical point of FeSeS superconductor
W. K. Huang, S. Hosoi, M. Čulo +9
Non-Fermi liquids are strange metals whose physical properties deviate qualitatively from those of conventional metals due to strong quantum fluctuations. In this paper, we report…
Se-NMR Study under Pressure on 12%-S Doped FeSe
Takanori Kuwayama, Kohei Matsuura, Yuta Mizukami +5
The 12%-S doped FeSe system has a high Tc of 30 K at a pressure of 3.0 GPa. We have successfully investigated its microscopic properties for the first time via Se-NMR measur…
Two different superconducting states and possible antiferromagnetic quantum critical points in S-doped FeSe under pressure
T. Kuwayama, K. Matsuura, Y. Mizukami +5
We performed Se-NMR measurements on FeSeS, ( = 0.12) up to 3.0 GPa at an applied magnetic field of 6.02 T, and found that the superconducting (SC) phase exhib…
Impact of Disorder on the Superconducting Phase Diagram in BaFe(AsP)
Yuta Mizukami, Marcin Konczykowski, Kohei Matsuura +4
In many classes of unconventional superconductors, the question of whether the superconductivity is enhanced by the quantum-critical fluctuations on the verge of an ordered phase r…
Weakening of the diamagnetic shielding in FeSeS at high pressures
K. Y. Yip, Y. C. Chan, Q. Niu +6
The superconducting transition of FeSeS with three distinct sulphur concentrations was studied under hydrostatic pressure up to 70 kbar via bulk AC susceptibi…
Maximizing Tc by tuning nematicity and magnetism in FeSe1-xSx superconductors
K. Matsuura, Y. Mizukami, Y. Arai +19
A fundamental issue concerning iron-based superconductivity is the roles of electronic nematicity and magnetism in realising high transition temperature (). To address t…
High-Tc superconductivity in FeSe at high pressure: Dominant hole carriers and enhanced spin fluctuations
J. P. Sun, G. Z. Ye, P. Shahi +10
The importance of electron-hole interband interactions is widely acknowledged for iron-pnictide superconductors with high transition temperatures (Tc). However, high-Tc superconduc…
Nematic quantum critical point without magnetism in FeSe1-xSx superconductors
S. Hosoi, K. Matsuura, K. Ishida +6
The importance of antiferromagnetic fluctuations are widely acknowledged in most unconventional superconductors. In addition, cuprates and iron pnictides often exhibit unidirection…
Dome-shaped magnetic order competing with high-temperature superconductivity at high pressures in FeSe
J. P. Sun, K. Matsuura, G. Z. Ye +12
The coexistence and competition between superconductivity and electronic orders, such as spin or charge density waves, have been a central issue in high transition-temperature (${T…