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A Sharp Peak of the Zero-Temperature Penetration Depth at Optimal Composition in BaFe2(As1-xPx)2
K. Hashimoto, K. Cho, T. Shibauchi +14
In a superconductor, the ratio of the carrier density, , to their effective mass, , is a fundamental property directly reflecting the length scale of the superfluid flow, t…
Cyclotron Resonance in the Hidden-Order Phase of URu2Si2
S. Tonegawa, K. Hashimoto, K. Ikada +9
We report the first observation of cyclotron resonance in the hidden-order phase of ultra-clean URuSi crystals, which allows the full determination of angle-dependent elect…
Abrupt change in the energy gap of superconducting Ba1-xKxFe2As2 single crystals with hole doping
W. Malaeb, T. Shimojima, Y. Ishida +17
We performed a Laser angle-resolved photoemission spectroscopy (ARPES) study on a wide doping range of Ba1-xKxFe2As2 (BaK) and precisely determined the doping evolution of the supe…
Emergent Rank-5 'Nematic' Order in URu2Si2
H. Ikeda, M. -T. Suzuki, R. Arita +3
Novel electronic states resulting from entangled spin and orbital degrees of freedom are hallmarks of strongly correlated f-electron systems. A spectacular example is the so-called…