Rare-Earth Chalcogenides:An Inspiring Playground for Exploring Frustrated Magnetism  

作　　者：Mingtai Xie Weizhen Zhuo Yanzhen Cai Zheng Zhang Qingming Zhang 谢铭泰;卓威震;蔡焱桢;张政;张清明(School of Physical Science and Technology,Lanzhou University,Lanzhou 730000,China;Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]School of Physical Science and Technology,Lanzhou University,Lanzhou 730000,China [2]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Chinese Physics Letters》2024年第11期208-220,共13页中国物理快报（英文版）

基　　金：supported by the National Key Research and Development Program of China(Grant No.2022YFA1402704);the National Science Foundation of China(Grant No.12274186);the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB33010100);the Synergetic Extreme Condition User Facility(SECUF)。

摘　　要：The rare-earth chalcogenide ARECh_(2) family(A=alkali metal or monovalent ions,RE=rare earth,Ch=chalcogen)has emerged as a paradigmatic platform for studying frustrated magnetism on a triangular lattice.The family members exhibit a variety of ground states,from quantum spin liquid to exotic ordered phases,providing fascinating insight into quantum magnetism.Their simple crystal structure and chemical tunability enable systematic exploration of competing interactions in quantum magnets.Recent neutron scattering and thermodynamic studies have revealed rich phase diagrams and unusual excitations,refining theoretical models of frustrated systems.This review provides a succinct introduction to ARECh_(2)research.It summarizes key findings on crystal structures,single-ion physics,magnetic Hamiltonians,ground states,and low-energy excitations.By highlighting current developments and open questions,we aim to catalyze further exploration and deeper physical understanding on this frontier of quantum magnetism.

关 键 词：quantum EXCITATION CRYSTAL 

分 类 号：O469[理学—凝聚态物理]