137 citations · 1k across the 34 of their papers we have counts for
22 papers · 1 filter
Lattice-Shifted Nematic Quantum Critical Point in FeSeS
S. Chibani, D. Farina, P. Massat +13
We report the evolution of nematic fluctuations in FeSeS single crystals as a function of Sulfur content across the nematic quantum critical point (QCP) 0…
Electronic States and Energy Dissipations of Vortex Core in Pure FeSe Single Crystals Investigated by Microwave Surface Impedance Measurements
Tatsunori Okada, Yoshinori Imai, Takahiro Urata +3
In order to clarify electronic states and energy dissipations due to a motion of a vortex core in pure FeSe, which is a candidate superconductor possessing a super-clean core, we m…
Effects of strain on the electronic structure, superconductivity, and nematicity in FeSe studied by angle-resolved photoemission spectroscopy
G. N. Phan, K. Nakayama, K. Sugawara +8
One of central issues in iron-based superconductors is the role of structural change to the superconducting transition temperature (T_c). It was found in FeSe that the lattice stra…
Non-Fermi liquid behavior of electrical resistivity close to the nematic critical point in FeCoSe and FeSeS
Takahiro Urata, Yoichi Tanabe, Khuong Kim Huynh +3
Temperature dependence of resistivity of single crystals of FeCoSe and FeSeS is studied in detail under zero and high magnetic field (magnetoresistance), th…
Enhanced superconducting transition temperature in hyper-interlayer-expanded FeSe despite the suppressed electronic nematic order and spin fluctuations
M. Majcen Hrovat, P. Jeglic, M. Klanjsek +8
The superconducting critical temperature, , of FeSe can be dramatically enhanced by intercalation of a molecular spacer layer. Here we report on a Se, Li and…
Argument on superconductivity pairing mechanism from cobalt impurity doping in FeSe: spin () or orbital () fluctuation
T. Urata, Y. Tanabe, K. K. Huynh +3
In high-superconducting transition temperature () iron-based superconductors, interband sign reversal () and sign preserving () -wave superco…
Gap Structure of the Overdoped Iron-Pnictide Superconductor Ba(FeNi)As: A Low-Temperature Specific-Heat Study
Gang Mu, Bo Gao, Xiaoming Xie +4
Low-temperature specific heat (SH) is measured on the postannealed Ba(Fe_{1-x}Ni_x)_2As_2 single crystal with x = 0.058 under different magnetic fields. The sample locates on the o…
Electric Transport of a Single Crystal Iron Chalcogenide FeSe Superconductor: Evidence of Symmetry Breakdown Nematicity and Additional Ultrafast Dirac cone-Like Carriers
K. K. Huynh, Y. Tanabe, T. Urata +4
An SDW antiferromagnetic (SDW-AF) low temperature phase transition is generally observe and the AF spin fluctuations are considered to play an important role for the superconductiv…
Development of spatial inhomogeneity of internal magnetic field above in BiSrCaYCuO observed by longitudinal-field muon-spin-relaxation
Yoichi Tanabe, Tadashi Adachi, Kensuke M. Suzuki +7
Longitudinal-field muon-spin-relaxation measurements have revealed inhomogeneous distribution of the internal magnetic field at temperatures above the bulk superconducting (SC) tra…
Mobility spectrum analytical approach for intrinsic band picture of Ba(FeAs)
Khuong Kim Huynh, Yoichi Tanabe, Takahiko Urata +4
Unconventional high temperature superconductivity as well as three-dimensional bulk Dirac cone quantum states arising from the unique d-orbital topology has been a recent priority…
Distinct Fe-induced magnetic states in the underdoped and overdoped regimes of La2-xSrxCu1-yFeyO4 revealed by muon spin relaxation
K. M. Suzuki, T. Adachi, Y. Tanabe +6
Zero-field and longitudinal-field muon-spin-relaxation measurements have been performed in partially Fe-substituted La2-xSrxCu1-yFeyO4 in a wide range of hole concentration, to inv…
Curie-like paramagnetism due to incomplete Zhang-Rice singlet formation in La2-xSrxCuO4
C. V. Kaiser, W. Huang, S. Komiya +5
In an effort to elucidate the origin of the Curie-like paramagnetism that is generic for heavily-overdoped cuprates, we have performed high transverse-field muon spin rotation (TF-…
A Field-directional Specific Heat Study on the Gap Structure of Overdoped Ba(FeCo)As
Gang Mu, Jun Tang, Yoichi Tanabe +7
Low-temperature specific heat is measured on the overdoped Ba(Fe_{1-x}Co_x)_2As_2 (x = 0.13) single crystal under magnetic fields along three different directions. A clear anisotro…
Coexistence of Dirac-Cone States and Superconductivity in Iron Pnictide Ba(FeRuAs)
Y. Tanabe, K. K. Huynh, S. Heguri +6
The Ru doping effect on the Dirac cone states is investigated in iron pnictide superconductors Ba(FeRuAs) using the transverse magnetoresistance (MR) measurements a…
Similarity between Ni and Zn impurity effects on the superconductivity and Cu-spin correlation in La2-xSrxCu1-yNiyO4 high-Tc cuprates: A comparison based on the hole trapping by Ni
Y. Tanabe, T. Adachi, K. Suzuki +5
Ni-substitution effects on the superconductivity and Cu-spin correlation have been investigated in La2-xSrxCu1-yNiyO4 from the electrical resistivity and muon spin relaxation measu…
Evidence for line nodes in the energy gap of the overdoped Ba(FeCo)As from low-temperature specific heat measurements
Gang Mu, Jun Tang, Yoichi Tanabe +3
Low-temperature specific heat (SH) is measured on Ba(FeCo)As single crystals in a wide doping region under different magnetic fields. For the overdoped sample…
Development of Cu-spin correlation in Bi_1.74_Pb_0.38_Sr_1.88_Cu_1-y_Zn_y_O_6+d_ high-temperature superconductors observed by muon spin relaxation
T. Adachi, Y. Tanabe, K. Suzuki +4
A systematic muon-spin-relaxation study in Bi-2201 high-Tc cuprates has revealed for the first time that the Cu-spin correlation (CSC) is developed at low temperatures below 2 K in…
Change of the Ground State upon Hole Doping Unveiled by Ni Impurity in High- Cuprates
Yoichi Tanabe, Kensuke Suzuki, Tadashi Adachi +5
The electronic ground state in high- cuprates where the superconducting state is suppressed by Ni substitution has been investigated in LaSrCuNiO…
Magnetic-susceptibility and specific-heat studies on the inhomogeneity of superconductivity in the underdoped La_2-x_Sr_x_CuO_4_
T. Adachi, K. Omori, Y. Tanabe +1
The possible inhomogeneity of superconductivity has been investigated by means of bulk-sensitive probes, using La_2-x_Sr_x_CuO_4_ (LSCO) single crystals from the underdoped to opti…
Magnetic-field-induced enhancement of the vortex pinning in the overdoped regime of LaSrCuO : Relation to the microscopic phase separation
Yoichi Tanabe, Tadashi Adachi, Keisuke Omori +3
In order to investigate the inhomogeneity of the superconducting (SC) state in the overdoped high- cuprates, we have measured the magnetic susceptibility, , of La$_{2…
Weak coupling d-wave BCS superconductivity and unpaired electrons in overdoped La_{2-x}Sr_{x}CuO_{4} single crystals
Y. Wang, J. Yan, L. Shan +4
The low-temperature specific heat (SH) of overdoped La_{2-x}Sr_{x}CuO_{4} single crystals (0.178=<x=<0.290) has been measured. For the superconducting samples (0.178=<x=<0.238), th…
Superconducting Volume Fraction in Overdoped Regime of La_2-x_Sr_x_CuO_4_: Implication for Phase Separation from Magnetic-Susceptibility Measurement
Y. Tanabe, T. Adachi, T. Noji +1
We have grown a single crystal of La_2-x_Sr_x_CuO_4_ in which the Sr concentration, x, continuously changes from 0.24 to 0.29 in the overdoped regime and obtained many pieces of si…