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論文

Dramatic elastic response at the critical end point in UTe$$_2$$

Vali$v{s}$ka, M.*; Haidamak, T.*; Cabala, A.*; Posp$'i$$v{s}$il, J.*; Bastien, G.*; Sechovsk$'y$, V.*; Prokle$v{s}$ka, J.*; 柳澤 達也*; Opletal, P.; 酒井 宏典; et al.

Physical Review Materials (Internet), 8(9), p.094415_1 - 094415_9, 2024/09

https://doi.org/10.1103/PhysRevMaterials.8.094415
 被引用回数：2 パーセンタイル：16.66(Materials Science, Multidisciplinary)

Elastic responses at the metamagnetic transition in UTe$$_2$$ are studied at high field. The elastic anomaly becomes the strongest at the critical-end-point. Similar behavior was also observed in another metamagnet UCoAl, suggesting a universal elastic response triggered by critical magnetic fluctuations.

論文

Quasi-2D Fermi surface in the anomalous superconductor UTe$$_2$$

Eaton, A. G.*; Weinberger, T. I.*; Popiel, N. J. M.*; Wu, Z.*; Hickey, A. J.*; Cabala, A.*; Posp$'i$$v{s}$il, J.*; Prokle$v{s}$ka, J.*; Haidamak, T.*; Bastien, G.*; et al.

Nature Communications (Internet), 15, p.223_1 - 223_10, 2024/01

https://doi.org/10.1038/s41467-023-44110-4
 被引用回数：46 パーセンタイル：98.53(Multidisciplinary Sciences)

Fermi surfaces (FSs) of the anomalous UTe$$_2$$ were successfully detected using quantum oscillation technique on an ultrapure single crystal. The shape of FS was reproduced from the experimental data revealing two cylindrical quasi-two-dimensional FSs. This analysis suggests that a fairly strong nesting nature possibly leading to magnetic fluctuations responsible for the triplet superconductivity.

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