Tuning magnetic correlations in s=1/2 spin ladder Ba2CuTe1−xWxO6 through site-selective cation substitution

IF 3.1 3区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Physical Review Materials Pub Date : 2024-09-06 DOI:10.1103/physrevmaterials.8.094404
Muskan Sande, Joydev Khatua, Youngsu Choi, Kwang-Yong Choi
{"title":"Tuning magnetic correlations in s=1/2 spin ladder Ba2CuTe1−xWxO6 through site-selective cation substitution","authors":"Muskan Sande, Joydev Khatua, Youngsu Choi, Kwang-Yong Choi","doi":"10.1103/physrevmaterials.8.094404","DOIUrl":null,"url":null,"abstract":"The site-selective substitution of diamagnetic <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msup><mrow><mi>d</mi></mrow><mn>10</mn></msup><mo>/</mo><msup><mrow><mi>d</mi></mrow><mn>0</mn></msup></mrow></math> cations offers an efficient way to fine-tune magnetic characteristics by controlling orbital hybridization and superexchange pathways. Herein, we explore the tunability of magnetic properties in coupled spin-ladder compounds <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi mathvariant=\"normal\">B</mi><msub><mi mathvariant=\"normal\">a</mi><mn>2</mn></msub><mi>CuT</mi><msub><mi mathvariant=\"normal\">e</mi><mrow><mn>1</mn><mrow><mtext>−</mtext><mi>x</mi></mrow></mrow></msub><msub><mi mathvariant=\"normal\">W</mi><mi>x</mi></msub><msub><mi mathvariant=\"normal\">O</mi><mn>6</mn></msub></mrow></math> (<math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi>x</mi><mo>=</mo><mn>0.0</mn><mo>−</mo><mn>0.30</mn></mrow></math>). The pristine compound exhibits spin-singlet correlations at elevated temperatures, as evidenced by a magnetic susceptibility peak at <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><msub><mi>T</mi><mi>max</mi></msub><mo>∼</mo><mn>70</mn></mrow></math> K, Schottky-like specific heat, unconventional magnetic Raman scattering, and a quasilinear decrease in the electron spin resonance linewidth. Notably, the substitution of <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msup><mrow><mi mathvariant=\"normal\">W</mi></mrow><mrow><mn>6</mn><mo>+</mo></mrow></msup></math> for <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><mrow><mi mathvariant=\"normal\">T</mi><msup><mrow><mi mathvariant=\"normal\">e</mi></mrow><mrow><mn>6</mn><mo>+</mo></mrow></msup></mrow></math> brings about several marked changes: an increase in the Curie-Weiss temperature, a suppression in the Néel ordering temperature, enhanced magnetic susceptibility at low temperatures, and a weakening of spin-ladder correlations. These modifications collectively suggest that the newly activated exchange interactions through <math xmlns=\"http://www.w3.org/1998/Math/MathML\"><msup><mrow><mi mathvariant=\"normal\">W</mi></mrow><mrow><mn>6</mn><mo>+</mo></mrow></msup></math> substitution primarily alter intraladder spin topology while amplifying quantum critical fluctuations. This finding highlights the potential for controlling magnetic correlations in spin-ladder compounds through targeted chemical substitution.","PeriodicalId":20545,"journal":{"name":"Physical Review Materials","volume":null,"pages":null},"PeriodicalIF":3.1000,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Review Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1103/physrevmaterials.8.094404","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

Abstract

The site-selective substitution of diamagnetic d10/d0 cations offers an efficient way to fine-tune magnetic characteristics by controlling orbital hybridization and superexchange pathways. Herein, we explore the tunability of magnetic properties in coupled spin-ladder compounds Ba2CuTe1xWxO6 (x=0.00.30). The pristine compound exhibits spin-singlet correlations at elevated temperatures, as evidenced by a magnetic susceptibility peak at Tmax70 K, Schottky-like specific heat, unconventional magnetic Raman scattering, and a quasilinear decrease in the electron spin resonance linewidth. Notably, the substitution of W6+ for Te6+ brings about several marked changes: an increase in the Curie-Weiss temperature, a suppression in the Néel ordering temperature, enhanced magnetic susceptibility at low temperatures, and a weakening of spin-ladder correlations. These modifications collectively suggest that the newly activated exchange interactions through W6+ substitution primarily alter intraladder spin topology while amplifying quantum critical fluctuations. This finding highlights the potential for controlling magnetic correlations in spin-ladder compounds through targeted chemical substitution.

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
通过位点选择性阳离子置换调谐 s=1/2 自旋梯 Ba2CuTe1-xWxO6 中的磁相关性
二磁性 d10/d0 阳离子的位点选择性取代为通过控制轨道杂化和超交换途径来微调磁特性提供了一种有效的方法。在此,我们探索了耦合自旋阶梯化合物 Ba2CuTe1-xWxO6 (x=0.0-0.30) 的磁特性可调性。原始化合物在高温下表现出自旋小卫星相关性,表现为在 Tmax∼70 K 出现磁感应强度峰、肖特基式比热、非常规磁性拉曼散射以及电子自旋共振线宽的类线性下降。值得注意的是,用 W6+ 替代 Te6+ 带来了几个明显的变化:居里-韦斯温度升高、奈尔有序温度降低、低温磁感应强度增强以及自旋阶梯相关性减弱。这些变化共同表明,通过 W6+ 替代新激活的交换相互作用主要改变了阶梯内部的自旋拓扑结构,同时放大了量子临界波动。这一发现凸显了通过有针对性的化学取代来控制自旋梯化合物磁相关性的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Physical Review Materials
Physical Review Materials Physics and Astronomy-Physics and Astronomy (miscellaneous)
CiteScore
5.80
自引率
5.90%
发文量
611
期刊介绍: Physical Review Materials is a new broad-scope international journal for the multidisciplinary community engaged in research on materials. It is intended to fill a gap in the family of existing Physical Review journals that publish materials research. This field has grown rapidly in recent years and is increasingly being carried out in a way that transcends conventional subject boundaries. The journal was created to provide a common publication and reference source to the expanding community of physicists, materials scientists, chemists, engineers, and researchers in related disciplines that carry out high-quality original research in materials. It will share the same commitment to the high quality expected of all APS publications.
期刊最新文献
Impact of grain boundary energy anisotropy on grain growth Magnetization dependent anisotropic topological properties in EuCuP Fluorite-type materials in the monolayer limit Intrinsic origins of broad luminescence in melt-grown ZnGa2O4 single crystals Subjugating extensive magnetostructural temperature window and giant magnetocaloric effect in B-doped (MnNiSi)0.67(Fe2Ge)0.33 hexagonal system
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1