activity
20242026
collaborators

9 papers

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.str-el2026

Search for magnetoacoustic quantum oscillations in the insulating phase of YbB

Ryosuke Kurihara, Atsuhiko Miyata, Koji Araki +9

A highly exotic phenomenon in solid-state physics is the observation of magnetic quantum oscillations in insulators. For instance, in the Kondo insulator YbB various groups…

cond-mat.supr-con2026

Thermodynamic Evidence of Tetracritical Topology in the - Phase Diagram of UTe for

Michal ValiÅ¡ka, Michal Vališka, Tetiana Haidamak +6

We report ultrasound velocity measurements on an ultraclean UTe single crystal with ~K for , performed up to 18~T and down to 0.33~K. The measurements pro…

cond-mat.str-el2026

Magnetoelastic signatures of the conical state and charge density waves in antiferromagnetic FeGe

L. Prodan, J. Sourd, S. Zherlitsyn +1

Kagome systems host intertwined spin, charge, and lattice degrees of freedom that drive emergent collective states. Here, we identify two distinct energy scales in the noncollinear…

cond-mat.supr-con2025

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.str-el2025

Direct probe of magnetic field effects on phonons by ultrasound propagation in a quasi-two-dimensional honeycomb magnet NaCoTeO

Xiaochen Hong, Maximilian Schiffer, Beat Valentin Schwarze +9

We study the phonon behavior of a Co-based honeycomb frustrated magnet NaCoTeO under magnetic field applied perpendicular to the honeycomb plane. The temperature and fi…