Ground-state magnetic structures of topological kagome metals RV$_6$Sn$_6$ (R = Tb, Dy, Ho, Er)

Yishui Zhou; Min-Kai Lee; Sabreen Hammouda; Sheetal Devi; Shin-Ichiro Yano; Romain Sibille; Oksana Zaharko; Wolfgang Schmidt; Karin Schmalzl; Ketty Beauvois; Eric Ressouche; Po-Chun Chang; Chun-Hao Huang; Lieh-Jeng Chang; Thomas Brückel; Yixi Su

doi:10.1103/PhysRevResearch.6.043291

paper

Ground-state magnetic structures of topological kagome metals RV $_{6}$ Sn $_{6}$ (R = Tb, Dy, Ho, Er)

arXiv:2411.14415 · doi:10.1103/PhysRevResearch.6.043291

Abstract

Magnetic kagome metals have attracted tremendous research interests recently, because they represent an ideal playground for exploring the fascinating interplay between their intrinsically inherited topologically non-trivial electron band structures, magnetism and electronic correlation effects, and the resultant novel electronic/magnetic states and emergent excitations. In this work, we report a comprehensive single-crystal neutron diffraction investigation of the ground-state magnetic structures of the recently discovered V-based topological kagome metals RV $_{6}$ Sn $_{6}$ (R = Tb, Dy, Ho, Er). Furthermore, the sample synthesis details and our systematic studies of crystal structure, low-temperature magnetic and thermodynamic properties of these compounds via various in-house characterization techniques are also reported. It can be revealed that RV $_{6}$ Sn $_{6}$ (R = Tb, Dy, Ho) have a collinear ferromagnetic order in the ground state, with the ordered magnetic moment aligned along the c axis for R = Tb, Ho, while approximately 20 $^{\circ}$ tilted off from the c axis for R = Dy. In contrast, ErV $_{6}$ Sn $_{6}$ shows an A-type antiferromagnetic structure with a magnetic propagation vector k = (0, 0, 0.5), and with the ordered magnetic moment aligned in the ab plane. A comparison of the low-temperature magnetic structures for both the extensively investigated topological kagome metal series of RV $_{6}$ Sn $_{6}$ and RMn $_{6}$ Sn $_{6}$ is given in details. This allows to gain new insights into the complex magnetic interactions, diverse single-ion magnetic anisotropies and spin dynamics in these compounds. The reported ground-state magnetic structures in RV $_{6}$ Sn $_{6}$ (R = Tb, Dy, Ho, Er) can pave the way for further explorations of the possible interplay between magnetism and topologically non-trivial electron band structures in the magnetically ordered phase regime.

To appear in Phys. Rev. Research

Ground-state magnetic structures of topological kagome metals RV6​Sn6​ (R = Tb, Dy, Ho, Er)

Abstract

References in corpus (11)

Ground-state magnetic structures of topological kagome metals RV $_{6}$ Sn $_{6}$ (R = Tb, Dy, Ho, Er)