Acoustic signatures of the phase transitions in the antiferromagnet U2Rh2Sn

0524862 - FZÚ 2021 RIV US eng J - Journal Article
Gorbunov, D.I. - Andreev, Alexander V. - Ishii, I. - Prokeš, K. - Suzuki, T. - Zherlitsyn, S. - Wosnitza, J.
Acoustic signatures of the phase transitions in the antiferromagnet U2Rh2Sn.
Physical Review B. Roč. 101, č. 1 (2020), s. 1-6, č. článku 014408. ISSN 2469-9950. E-ISSN 2469-9969
R&D Projects: GA ČR(CZ) GA19-00925S
Institutional support: RVO:68378271
Keywords : uranium intermetallics * antiferromagnets * high-field transitions * magnetoacoustics
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 4.036, year: 2020
Method of publishing: Limited access
https://doi.org/10.1103/PhysRevB.101.014408

We report on ultrasound measurements in a single crystal of the antiferromagnet U2Rh2Sn as a function of temperature and magnetic field. We find pronounced anomalies in the sound velocity at the Neel temperature, 25 K, and at the field-induced spin-flop-like transition at 22.5 T, which points to a strong magnetoelastic coupling. Additionally, we find that in the paramagnetic regime the temperature dependence of the magnetic susceptibility and the field dependences of the magnetization and sound velocity of transverse acoustic waves can be well described assuming a localized character of the 5 f electrons. Using this premise, the crystal-electric-field scheme of U2Rh2Sn has been determined.

Permanent Link: http://hdl.handle.net/11104/0309108