paper

Incommensurate and commensurate antiferromagnetic orders in the kagome compound UV $_{6}$ Sn $_{6}$

arXiv:2503.12922 · doi:10.1103/PhysRevB.111.174432

Abstract

We report on the synthesis of single crystals of the kagome compound, UV $_{6}$ Sn $_{6}$ , and present the results of magnetization, electrical resistivity, heat capacity, x-ray, and neutron diffraction experiments to characterize the structure and magnetic properties. UV $_{6}$ Sn $_{6}$ crystallizes in a large supercell of the HfFe $_{6}$ Ge $_{6}$ parent structure with an hexagonal symmetry in which some of the U atoms are shifted by $c /2$ in an ordered fashion. Below $T_{N 1} \approx$ 29 K, an incommensurate magnetic structure with a temperature-dependent wave vector $(0, 0, k_{z})$ is observed. Below $T_{N 2} =$ 23.5 K, the wave vector locks in to $(0, 0, 0.5)$ , forming an antiferromagnetic ground state. The U moments align along the $c$ axis retaining a large magnetic anisotropy. These findings highlight the role of the $5 f$ orbitals from uranium in this structural family in driving both magnetic ordering and structural modulation and distinguish UV $_{6}$ Sn $_{6}$ from its lanthanide-based analogs.

13 pages, 12 figures. v3: fixed typos, text improvements

Incommensurate and commensurate antiferromagnetic orders in the kagome compound UV6​Sn6​

Abstract

Incommensurate and commensurate antiferromagnetic orders in the kagome compound UV $_{6}$ Sn $_{6}$