Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session W17: Topological Materials and Platforms
3:00 PM–5:48 PM,
Thursday, March 7, 2024
Room: M100H
Sponsoring
Unit:
DCMP
Chair: Qunfei Zhou, University of Kansas
Abstract: W17.00007 : Magnetism and band topology in Kagome magnets RT6Sn6 (T = V and Mn; R=Tb, Dy, Ho, Er, and Tm)
4:12 PM–4:24 PM
Presenter:
Liqin Ke
(Ames Lab)
Authors:
Bruce Harmon
(Iowa State University)
Yongbin Lee
(Ames National Laboratory)
Igor I Mazin
(George Mason University)
Robert J McQueeney
(Iowa State University)
Liqin Ke
(Ames Lab)
Rare-earth-containing Kagome-lattice magnets have recently emerged as a new platform for exploring the interplay between magnetism and topological electronic states.
In this study, we investigate the magnetism and band topology in RMn6Sn6 and RV6Sn6 systems with heavy rare-earth (R) atoms.
By combining ab initio calculations and analytical modeling, we provide a comprehensive explanation of the evolution of rare-earth magnetic anisotropy across the series, achieving full quantitative agreement with experimental data.
We have discovered the significant role played by higher-order crystal-field parameters and rare-earth magnetic anisotropy constants in these systems.
Furthermore, we discuss the effects of electron correlation on band structure and magnetism. Finally, we address the challenges and validity of ab initio approaches used to calculate rare-earth anisotropy in related systems.
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