KFe2Se2 is the Parent Compound of K-Doped Iron Selenide Superconductors
文献类型：期刊论文
| 作者 | Li, W ; Ding, H ; Li, Z ; Deng, P ; Chang, K ; He, K ; Ji, SH ; Wang, LL ; Ma, XC ; Hu, JP ; Chen, X ; Xue, QK |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2012 |
| 卷号 | 109期号:5 |
| 关键词 | HIGH-TEMPERATURE SUPERCONDUCTIVITY |
| ISSN号 | 0031-9007 |
| 通讯作者 | Li, W: Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China. |
| 中文摘要 | We elucidate the existing controversies in the newly discovered K-doped iron selenide ( KxFe2-ySe2-z) superconductors. The stoichiometric KFe2Se2 with root 2 x root 2 p charge ordering was identified as the parent compound of KxFe2-ySe2-z superconductor using scanning tunneling microscopy and spectroscopy. The superconductivity is induced in KFe2Se2 by either Se vacancies or interacting with the antiferromagnetic K2Fe4Se5 compound. In total, four phases were found to exist in KxFe2-ySe2-z: parent compound KFe2Se2, superconducting KFe2Se2 with root 2 x root 5 charge ordering, superconducting KFe2Se2-z with Se vacancies, and insulating K2Fe4Se5 with root 5 x root 5 Fe vacancy order. The phase separation takes place at the mesoscopic scale under standard molecular beam epitaxy conditions. |
| 收录类别 | SCI |
| 资助信息 | NSFC; National Basic Research Program of China |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/40451]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Li, W,Ding, H,Li, Z,et al. KFe2Se2 is the Parent Compound of K-Doped Iron Selenide Superconductors[J]. PHYSICAL REVIEW LETTERS,2012,109(5). |
| APA | Li, W.,Ding, H.,Li, Z.,Deng, P.,Chang, K.,...&Xue, QK.(2012).KFe2Se2 is the Parent Compound of K-Doped Iron Selenide Superconductors.PHYSICAL REVIEW LETTERS,109(5). |
| MLA | Li, W,et al."KFe2Se2 is the Parent Compound of K-Doped Iron Selenide Superconductors".PHYSICAL REVIEW LETTERS 109.5(2012). |
入库方式： OAI收割
来源：物理研究所
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