Acoustic signatures of the phase transitions in the antiferromagnet U2Rh2Sn

0524862 - FZÚ 2021 RIV US eng J - Článek v odborném periodiku
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
Grant CEP: GA ČR(CZ) GA19-00925S
Institucionální podpora: RVO:68378271
Klíčová slova: uranium intermetallics * antiferromagnets * high-field transitions * magnetoacoustics
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 4.036, rok: 2020
Způsob publikování: Omezený přístup
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.

Trvalý link: http://hdl.handle.net/11104/0309108