Magnetic field induced reentrant multipolar ordering in the distorted kagome-lattice antiferromagnet Dy.sub.3./sub.Ru.sub.4./sub.Al.sub.12./sub.

0572214 - FZÚ 2024 RIV US eng J - Článek v odborném periodiku
Ishii, I. - Suzuki, T. - Andreev, Alexander V. - Mitsumoto, K. - Araki, K. - Miyata, A. - Gorbunov, D.I. - Zherlitsyn, S. - Wosnitza, J.
Magnetic field induced reentrant multipolar ordering in the distorted kagome-lattice antiferromagnet Dy₃Ru₄Al₁₂.
Physical Review B. Roč. 107, č. 20 (2023), č. článku 205136. ISSN 2469-9950. E-ISSN 2469-9969
Grant CEP: GA ČR(CZ) GA21-09766S; GA MŠMT(CZ) LM2018096
Institucionální podpora: RVO:68378271
Klíčová slova: rare-earth intermetallic compounds * magnetic properties * acoustic properties
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 3.7, rok: 2022
Způsob publikování: Open access
https://doi.org/10.1103/PhysRevB.107.205136

We report on ultrasonic and magnetocaloric-effect measurements of the hexagonal antiferromagnet Dy3Ru4Al12 having a distorted kagome lattice. We observed a pronounced softening of the transverse modulus, C44, above 30 T applied along [100], indicating an as-yet-unidentified magnetic field induced phase transition. We determined the field-temperature phase diagrams using pulsed magnetic fields up to 55.2 T, applied along [100] and [001]. Optimizing crystal-electric-field parameters within the mean-field approximation, we conclude that the enhancement of the field induced phase-transition temperature is due to electric quadrupolar and magnetic octupolar mediated interactions. We propose that the order parameter of the magnetic field induced phase transitions is the electric quadrupole Ozx, facilitated by octupole-mediated interactions.
Trvalý link: https://hdl.handle.net/11104/0343571