8 papers
Ultrasound Evidence for a Low-Temperature Anomaly Inside the Superconducting State of 4Hb-TaS
Yongwei Li, Dmitri V. Efremov, Paul Leask +7
We report low-temperature ultrasound measurements on single crystals of the layered van der Waals superconductor 4Hb-TaS. Specific heat and ac magnetic susceptibility show a sh…
Origins of spontaneous magnetic fields in SrRuO
Yongwei Li, Rustem Khasanov, Stephen P. Cottrell +5
The nature of the broken time reversal symmetry (BTRS) state in SrRuO remains elusive, and its relation to superconductivity remains controversial. There are various univer…
Novel coupling between charge order and time-reversal-symmetry-breaking superconductivity
Quanxin Hu, Lingfeng Zhang, Yu Zheng +9
The interplay between charge-density waves (CDWs), which break translational symmetry, and spatially homogeneous superconductivity, which breaks global U(1) gauge symmetry, can giv…
Ultrasound evidence for multicomponent superconducting order parameter in BaKFeAs with electron quadrupling phase
Chris Halcrow, Ilya Shipulin, Federico Caglieris +6
Experiments have pointed to the formation of the electron quadrupling condensate in BaKFeAs at . The state spontaneously breaks time-reversal symmet…
Nematic Fluctuations and Electronic Correlations in Heavily Hole-Doped BaKFeAs Probed by Elastoresistance
Franz Eckelt, Steffen Sykora, Xiaochen Hong +6
This work investigates nematic fluctuations and electronic correlations in the hole-doped iron pnictide superconductor BaKFeAs by means of longitudinal and tran…
Hund's coupling assisted orbital-selective superconductivity in Ba1-xKxFe2As2
Elena Corbae, Rong Zhang, Cong Li +10
While the superconducting transition temperature of hole-doped Ba_{1-x}K_{x}Fe_{2}As_{2} decreases past optimal doping, superconductivity does not completely disappear even for the…