CONDENSED MATTER

Structural transition in dodecaborides according to NMR in LuB$_{12}$

O. M. Vyaselev^ab, A. A. Gippius^cd, N. E. Sluchanko<sup>e

a</sup> Russian Quantum Center, Skolkovo, Moscow
^b Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142432 Russia
^c Lebedev Physical Institute, Russian Academy of Sciences, Moscow, 119991 Russia
^d Moscow State University, Moscow, 119991 Russia
^e Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, 119991 Russia

Abstract: Analysis of the nuclear magnetic resonance linewidth and spin-lattice relaxation rate of $^{17}$5Lu in LuB$_{12}$ assumes a structural transition at $T^*\sim150$ K into a state with a long-range ferrodistortive order of lattice distortions caused by the cooperative Jahn–Teller effect. The reported experimental facts imply this transition to be characteristic of other rare-earth dodecaborides.

Received: 15.04.2025
Revised: 15.04.2025
Accepted: 16.04.2025

DOI: 10.31857/S0370274X25050188

 English version: Journal of Experimental and Theoretical Physics Letters, 2025, 121:10, 789–793