中国科学院理论物理研究所机构知识库
Advanced  
ITP OpenIR  > 理论物理所2012年知识产出  > 期刊论文
题名: Magnetic frustration and iron-vacancy ordering in iron chalcogenide
作者: Fang, C ;  Xu, B ;  Dai, PC ;  Xiang, T ;  Hu, JP
刊名: PHYSICAL REVIEW B
出版日期: 2012
卷号: 85, 期号:13, 页码:134406
关键词: EXCHANGE INTERACTIONS ;  SPIN-WAVES ;  SUPERCONDUCTIVITY
学科分类: Physics
通讯作者: Fang, C (reprint author), Princeton Univ, Dept Phys, Princeton, NJ 08544 USA.
部门归属: [Fang, Chen; Hu, Jiangping] Purdue Univ, Dept Phys, W Lafayette, IN 47907 USA; [Xu, Bao; Dai, Pengcheng; Xiang, Tao; Hu, Jiangping] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China; [Dai, Pengcheng] Univ Tennessee, Knoxville, TN 37996 USA; [Xiang, Tao] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: We study the spin-and vacancy-ordered states in 122 iron chalcogenides (A(1-y)Fe(2-x)Se(2)) by inspecting the magnetic ground states of a J(1)-J(2)-J(3) model on different vacancy-ordered lattices observed/conjectured in these compounds. A highly frustrated J(1)-J(2)-J(3) model was first applied to the study of magnetism in FeTe and was reported to explain the inelastic neutron-scattering data qualitatively. We find that the vacancy-ordered states are generally energetically favored for their reduction of magnetic frustration inherent to the spin-exchange model and, especially, that the 245 vacancy-spin-ordered state minimizes the magnetic exchange energy among all known vacancy-ordered states, in line with the fact that it has the highest vacancy-ordering phase transition temperature and the largest ordered moment in all iron-based superconductors. Thus, our study provides an electronic perspective for understanding the various vacancy orderings in these compounds. Then we focus on the experimentally well-studied 245 state and calculate the spin-wave spectrum and dynamic spin susceptibility. Finding that the key features of these calculated quantities are consistent with a recent inelastic neutron-scattering experiment, we conclude that we have obtained a qualitative local spin model for the 245 state. We also discuss the possibility of a unified local-moment description for all iron chalcogenides based on our result.
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000302235300006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15121
Appears in Collections:理论物理所2012年知识产出_期刊论文

Files in This Item:
File Name/ File Size Content Type Version Access License
Magnetic frustration and iron-vacancy ordering in iron chalcogenide.pdf(721KB)----开放获取View 联系获取全文

Recommended Citation:
Fang, C,Xu, B,Dai, PC,et al. Magnetic frustration and iron-vacancy ordering in iron chalcogenide[J]. PHYSICAL REVIEW B,2012,85(13):134406.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Fang, C]'s Articles
 [Xu, B]'s Articles
 [Dai, PC]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Fang, C]‘s Articles
 [Xu, B]‘s Articles
 [Dai, PC]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
文件名: Magnetic frustration and iron-vacancy ordering in iron chalcogenide.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院理论物理研究所 - Feedback
Powered by CSpace