Sr(PbCl)Cu(BO)中的自旋密度波、非常规磁性和热输运性质

Spin-Density Wave, Unconventional Magnetic and Thermal Transport Properties in Sr(PbCl)Cu(BO).

作者信息

Ginting Dianta, Won Bora, Rhyee Jong-Soo

机构信息

Master of Mechanical Engineering Program, Faculty of Engineering, Universitas Mercubuana, West Jakarta 11650, Indonesia.

Department of Applied Physics, Institute of Natural Sciences, Kyung Hee University, Yongin 17104, Republic of Korea.

出版信息

Materials (Basel). 2024 Dec 18;17(24):6179. doi: 10.3390/ma17246179.

DOI:10.3390/ma17246179

PMID:39769779

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11676259/

Abstract

SrCu(BO) (Sr-122) has attracted considerable interest as a quasi-two-dimensional S = 1/2 Heisenberg antiferromagnetic spin system with a Shastry-Sutherland lattice (SSL) structure. It features a Cu spin dimer ground state and exhibits intra-dimer Dzyaloshinskii-Moriya interactions, making Sr-122 a fascinating platform for studying quantum magnetic phenomena. In this study, we investigate the β-phase of SrCu(BO) (β-Sr-212), which retains the same spin structure as Sr-122, to explore how the carrier concentration affects the spin gap. Our results show that increasing the doping levels in SrCu(BO) modulates the magnetic properties and slightly suppresses the spin gap, offering new possibilities for tuning its quantum magnetic behavior.

摘要

SrCu(BO)（Sr-122）作为一种具有沙斯特里-萨瑟兰晶格（SSL）结构的准二维S = 1/2海森堡反铁磁自旋系统，引起了人们的极大兴趣。它具有铜自旋二聚体基态，并表现出二聚体内的Dzyaloshinskii-Moriya相互作用，这使得Sr-122成为研究量子磁现象的一个引人入胜的平台。在本研究中，我们研究了SrCu(BO)的β相（β-Sr-212），它保留了与Sr-122相同的自旋结构，以探索载流子浓度如何影响自旋能隙。我们的结果表明，增加SrCu(BO)中的掺杂水平会调节磁性能并略微抑制自旋能隙，为调整其量子磁行为提供了新的可能性。