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Superconductivity of anomalous pseudospin
Han Gyeol Suh, Yue Yu, Tatsuya Shishidou +3
Spin-orbit coupling driven by broken inversion symmetry () is known to lead to unusual magnetic response of superconductors, including extremely large critical fields for spin-s…
Tuning quantum paramagnetism and d-wave superconductivity in single-layer iron chalcogenides by chemical pressure
Qiang Zou, Basu Dev Oli, Huimin Zhang +4
By substituting S into single-layer FeSe/SrTiO3, chemical pressure is applied to tune its paramagnetic state that is modeled as an incoherent superposition of spin-spiral states. T…
Non-symmorphic symmetry and field-driven odd-parity pairing in CeRhAs
D. C. Cavanagh, T. Shishidou, M. Weinert +2
Recently, evidence has emerged for a field-induced even- to odd-parity superconducting phase transition in CeRhAs [S. Khim et al., Science 373 1012 (2021)]. Here we argue t…
Topological band and superconductivity in UTe
Tatsuya Shishidou, Han Gyeol Suh, P. M. R. Brydon +2
UTe has recently been found to be a likely spin-triplet superconductor that exhibits evidence for chiral Majorana edge states. A characteristic structural feature of UTe is…
On the interplay of paramagnetism and topology in the Fe-based High Tc Superconductors
J. D. Rameau, N. Zaki, G. D. Gu +2
The high Tc superconductor FeTe0.55Se0.45 has recently been shown to support a surface state with topological character. Here we use low-energy laser-based ARPES with variable ligh…
Evidence for d-wave superconductivity in single layer FeSe/SrTiO3 probed by quasiparticle scattering off step edges
Zhuozhi Ge, Chenhui Yan, Huimin Zhang +3
The de Gennes extrapolation length is a direction dependent measure of the spatial evolution of the pairing gap near the boundary of a superconductor, and thus provides a viable me…
Resilient nodeless -wave superconductivity in monolayer FeSe
D. F. Agterberg, T. Shishidou, P. M. R. Brydon +2
Monolayer FeSe exhibits the highest transition temperature among the iron based superconductors and appears to be fully gapped, seemingly consistent with -wave superconductivity…
Superconductivity in CuCl/Si: possible excitonic pairing?
S. H. Rhim, Rolando Saniz, M. Weinert +1
The search for superconductivity with higher transition temperature () has long been a challenge in research efforts ever since its first discovery in 1911. The effort has led…