230 citations · 1.1k across the 23 of their papers we have counts for
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Investigation of the Superconducting Gap Structure in SrFe(AsP) by Magnetic Penetration Depth and Flux Flow Resistivity Analysis
Hideyuki Takahashi, Tatsunori Okada, Yoshinori Imai +4
We measured the microwave surface impedances and obtained the superfluid density and flux flow resistivity in single crystals of a phosphor-doped iron-based superconductor SrFe…
Scanning Tunneling Microscopy/Spectroscopy of Vortices in LiFeAs
T. Hanaguri, K. Kitagawa, K. Matsubayashi +3
We investigate vortices in LiFeAs using scanning tunneling microscopy/spectroscopy. Zero-field tunneling spectra show two superconducting gaps without detectable spectral weight ne…
Microwave Surface Impedance Measurements of the Electronic State and Dissipation of Magnetic Vortices in Superconducting Iron-Based LiFeAs Single Crystals
T. Okada, H. Takahashi, Y. Imai +4
LiFeAs is one of the iron-based superconductors having multiple gaps with the possible sign reversal. To clarify how those novel natures affect the energy dissipation of magnetic v…
Microwave Surface Impedance Measurements of LiFeAs Single Crystals
Yoshinori Imai, Hideyuki Takahashi, Kentaro Kitagawa +6
We report results of microwave surface impedance measurements of LiFeAs single crystals. The in-plane penetration depth depends on temperature exponentially at low temperatures, wh…
Spontaneous formation of a superconducting and antiferromagnetic hybrid state in SrFe2As2 under high pressure
K. Kitagawa, N. Katayama, H. Gotou +5
We report a novel superconducting (SC) and antiferromagnetic (AF) hybrid state in SrFe2As2 revealed by 75As nuclear magnetic resonance (NMR) experiments on a single crystal under h…
Commensurate Itinerant Antiferromagnetism in BaFe2As2: 75As-NMR Studies on a Self-Flux Grown Single Crystal
Kentaro Kitagawa, Naoyuki Katayama, Kenya Ohgushi +2
We report results of 75As nuclear magnetic resonance (NMR) experiments on a self-flux grown single crystal of BaFe2As2. A first-order antiferromagnetic (AF) transition near 135 K w…