ITP OpenIR  > 理论物理所科研产出  > SCI论文
Yan, XW; Gao, M; Lu, ZY; Xiang, T; Yan, XW (reprint author), Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China.
Ternary iron selenide K0.8Fe1.6Se2 is an antiferromagnetic semiconductor
Source PublicationPHYSICAL REVIEW B
Language英语
KeywordSuperconductivity
AbstractWe have studied electronic and magnetic structures of K0.8+xFe1.6Se2 by performing the first-principles electronic structure calculations. The ground state of the Fe-vacancies ordered K0.8Fe1.6Se2 is found to be a quasi-two-dimensional blocked checkerboard antiferromagnetic (AFM) semiconductor with an energy gap of 594 meV and a large ordering magnetic moment of 3.37 mu B for each Fe atom, in excellent agreement with the neutron-scattering measurement. The underlying mechanism is the chemical-bonding-driven tetramer lattice distortion. K0.8+xFe1.6Se2 with finite x is a doped AFM semiconductor with low conducting carrier concentration, which is approximately proportional to the excess potassium content, consistent qualitatively with the infrared observation. Our study reveals the importance of the interplay between antiferromagnetism and superconductivity in these materials. This suggests that K0.8Fe1.6Se2, instead of KFe2Se2, should be regarded as a parent compound from which the superconductivity emerges upon electron or hole doping.
2011
ISSN1098-0121
Volume83Issue:23Pages:233205
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China; MOST, China ; National Natural Science Foundation of China; MOST, China ; National Natural Science Foundation of China; MOST, China ; National Natural Science Foundation of China; MOST, China
Citation statistics
Cited Times:82[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/14333
Collection理论物理所科研产出_SCI论文
Corresponding AuthorYan, XW (reprint author), Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China.
Recommended Citation
GB/T 7714
Yan, XW,Gao, M,Lu, ZY,et al. Ternary iron selenide K0.8Fe1.6Se2 is an antiferromagnetic semiconductor[J]. PHYSICAL REVIEW B,2011,83(23):233205.
APA Yan, XW,Gao, M,Lu, ZY,Xiang, T,&Yan, XW .(2011).Ternary iron selenide K0.8Fe1.6Se2 is an antiferromagnetic semiconductor.PHYSICAL REVIEW B,83(23),233205.
MLA Yan, XW,et al."Ternary iron selenide K0.8Fe1.6Se2 is an antiferromagnetic semiconductor".PHYSICAL REVIEW B 83.23(2011):233205.
Files in This Item:
File Name/Size DocType Version Access License
Ternary iron selenid(797KB) 开放获取LicenseApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yan, XW]'s Articles
[Gao, M]'s Articles
[Lu, ZY]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yan, XW]'s Articles
[Gao, M]'s Articles
[Lu, ZY]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yan, XW]'s Articles
[Gao, M]'s Articles
[Lu, ZY]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

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