Highly anisotropic magnetism in the vanadium-based kagome metal TbV6Sn6

TL;DR

This study synthesizes and characterizes TbV6Sn6, revealing strong uniaxial magnetic anisotropy and multiband transport, suggesting potential for topological phenomena driven by magnetic order and band topology interplay.

Contribution

It provides the first detailed characterization of TbV6Sn6, highlighting its magnetic anisotropy and transport properties, and proposes it as a candidate for topological magnetic states.

Findings

TbV6Sn6 shows strong uniaxial magnetic anisotropy below 4.3 K.

The compound exhibits high-mobility multiband transport behavior.

Potential for hosting Chern gaps due to interplay of magnetic order and band topology.

Abstract

RV6Sn6 (R=rare earth) compounds are appealing materials platforms for exploring the interplay between R-site magnetism and nontrivial band topology associated with the nonmagnetic vanadium-based kagome network. Here we present the synthesis and characterization of the kagome metal TbV6Sn6 via single-crystal x-ray diffraction, magnetization, transport, and heat capacity measurements. Magnetization measurements reveal strong, uniaxial magnetic anisotropy rooted in the alignment of Tb3{\AA} moments in the interplane direction below 4.3(2) K. TbV6Sn6 exhibits multiband transport behavior with high mobilities of charge carriers, and our measurements suggest TbV6Sn6 is a promising candidate for hosting Chern gaps driven via the interplay between Tb-site magnetic order and the band topology of the V-site kagome network.