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27 papers · 2 filters
Synergy and competition between superconductivity and antiferromagnetism in FeSe under pressure
Guan-Yu Chen, Enyu Wang, Xiyu Zhu +1
Temperature dependence of resistivity under high pressures with magnetic fields parallel and perpendicular to the FeSe planes are measured in FeSe single crystals. It is found that…
An unusual continuous paramagnetic-limited superconducting phase transition in 2D NbSe
Egon Sohn, Xiaoxiang Xi, Wen-Yu He +9
Time reversal and spatial inversion are two key symmetries for conventional Bardeen-Cooper-Schrieffer (BCS) superconductivity. Breaking inversion symmetry can lead to mixed-parity…
Proximity-Induced Superconductivity with Subgap Anomaly in Type II Weyl Semi-Metal WTe2
Qiao Li, Chaocheng He, Yaojia Wang +16
Due to the non-trivial topological band structure in type-II Weyl semimetal Tungsten ditelluride (WTe2), unconventional properties may emerge in its superconducting phase. While re…
Scaling of the Fano effect of the in-plane Fe-As phonon and the superconducting critical temperature in BaKFeAs
B. Xu, E. Cappelluti, L. Benfatto +11
By means of infrared spectroscopy we determine the temperature-doping phase diagram of the Fano effect for the in-plane Fe-As stretching mode in BaKFeAs.…
Direct visualization of sign reversal s^+- superconducting gaps in FeTe0.55Se0.45
Mingyang Chen, Qingkun Tang, Xiaoyu Chen +7
In many unconventional superconductors, the pairing of electrons is driven by the repulsive interaction, which leads to the sign reversal of superconducting gaps along the Fermi su…
Observation of orbital ordering and origin of the nematic order in FeSe
R. X. Cao, Jian Hu, Jun Dong +9
To elucidate the origin of nematic order in FeSe, we performed field-dependent 77Se-NMR measurements on single crystals of FeSe. We observed orbital ordering from the splitting of…