activity
20222026
most citedCalorimetric evidence for two phase transitions in BaKFeAs with fermion pairing and quadrupling states

23 citations · 30 across the 8 of their papers we have counts for

collaborators

8 papers

cond-mat.str-el2026

Effective Ionic Valence and Local Magnetic Moment in Kagome Superconductors

Ruoshi Jiang, Zi-Jian Lang, Yuzki Oey +11

In order to understand the unexpected similarity and the correlated behavior in kagome superconductor families AVSb (A = K, Rb, Cs) and ATiBi (A = Rb, Cs), we inves…

cond-mat.supr-con2026

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…

cond-mat.supr-con2025

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…

cond-mat.supr-con2025

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…

cond-mat.supr-con2025★ 1 cited

Evidence of pseudogap and absence of spin magnetism in the time-reversal-symmetry-breaking state of BaKFeAs

Florian Bärtl, Nadia Stegani, Federico Caglieris +13

Muon-spin-rotation (SR) experiments and the observation of a spontaneous Nernst effect indicate time-reversal symmetry breaking (BTRS) at above the supercon…

cond-mat.supr-con2024★ 3 cited

Direct observation of quantum vortex fractionalization in multiband superconductors

Yu Zheng, Quanxin Hu, Haijiao Ji +13

Magnetic field is expelled from a superconductor, unless it forms quantum vortices, consisting of a core singularity with current circulating around it. The London quantization con…

cond-mat.supr-con2024★ 3 cited

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…

cond-mat.supr-con2022★ 23 cited

Calorimetric evidence for two phase transitions in BaKFeAs with fermion pairing and quadrupling states

Ilya Shipulin, Nadia Stegani, Ilaria Maccari +9

Theoretically, materials that break multiple symmetries allow, under certain conditions, the formation of four-fermion condensates above the superconducting critical temperature. S…