Effects of Co and Mn doping in K0.8Fe2-ySe2 revisited
文献类型：期刊论文
| 作者 | Zhou, TT ; Chen, XL ; Guo, JG ; Jin, SF ; Wang, G ; Lai, XF ; Ying, TP ; Zhang, H ; Shen, SJ ; Wang, SC ; Zhu, KX |
| 刊名 | JOURNAL OF PHYSICS-CONDENSED MATTER
 |
| 出版日期 | 2013 |
| 卷号 | 25期号:27 |
| ISSN号 | 0953-8984 |
| 通讯作者 | Zhou, TT (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Res & Dev Ctr Funct Crystals, Beijing 100190, Peoples R China. |
| 中文摘要 | Accumulated evidence indicates that phase separation occurs in potassium intercalated iron selenides, a superconducting phase coexisting with the antiferromagnetic phase K2Fe4Se5, the so-called '245 phase'. Here, we report a comparative study of substitution effects by Co and Mn for Fe sites in K0.8Fe2-ySe2 within the phase separation scenario. Our results demonstrate that Co and Mn dopants have distinct differences in occupancy and hence in the suppression mechanism of superconductivity upon doping of Fe sites. In K0.8Fe2-xCoxSe2, Co prefers to occupy the lattice of the superconducting phase and suppresses superconductivity very quickly, obeying the magnetic pair-breaking mechanism or the collapse of the Fermi surface nesting mechanism. In contrast, in K0.8Fe1.7-xMnxSe2, Mn shows no preferential occupancy in the superconducting phase or the 245 phase. The suppression of superconductivity can be attributed to restraining of the superconducting phase and meanwhile inducing another non-superconducting phase by Mn doping. |
| 资助信息 | National Natural Science Foundation of China [90922037, 51072226, 51202286]; Chinese Academy of Sciences; International Centre for Diffraction Data (ICDD, USA) |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/56928]  |
| 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 | Zhou, TT,Chen, XL,Guo, JG,et al. Effects of Co and Mn doping in K0.8Fe2-ySe2 revisited[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2013,25(27). |
| APA | Zhou, TT.,Chen, XL.,Guo, JG.,Jin, SF.,Wang, G.,...&Zhu, KX.(2013).Effects of Co and Mn doping in K0.8Fe2-ySe2 revisited.JOURNAL OF PHYSICS-CONDENSED MATTER,25(27). |
| MLA | Zhou, TT,et al."Effects of Co and Mn doping in K0.8Fe2-ySe2 revisited".JOURNAL OF PHYSICS-CONDENSED MATTER 25.27(2013). |
入库方式： OAI收割
来源：物理研究所
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