Superconductivity induced by doping platinum in BaFe2As2
文献类型：期刊论文
| 作者 | Zhu, XY ; Han, F ; Mu, G ; Cheng, P ; Tang, J ; Ju, J ; Tanigaki, K ; Wen, HH |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2010 |
| 卷号 | 81期号:10 |
| 关键词 | SPIN |
| ISSN号 | 1098-0121 |
| 通讯作者 | Zhu, XY (reprint author), Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, POB 603, Beijing 100190, Peoples R China. |
| 中文摘要 | By substituting Fe with the 5d-transition metal Pt in BaFe2As2, we have successfully synthesized the superconductors BaFe2-xPtxAs2. The systematic evolution of the lattice constants indicates that the Fe ions were successfully replaced by Pt ions. By increasing the doping content of Pt, the antiferromagnetic order and structural transition of the parent phase is suppressed and superconductivity emerges at a doping level of about x=0.02. At a doping level of x=0.1, we get a maximum transition temperature T-c of about 25 K. While even for this optimally doped sample, the residual resistivity ratio is only about 1.35, indicating a strong impurity scattering effect. We thus argue that the doping to the Fe sites naturally leads to a high level impurity scattering, although the superconductivity can still survive at about 25 K. The synchrotron powder x-ray diffraction shows that the resistivity anomaly is in good agreement with the structural transition. The superconducting transitions at different magnetic fields were also measured at the doping level of about x=0.1, yielding a slope of -dH(c2)/dT=5.4 T/K near T-c. Finally a phase diagram was established for the Pt-doped 122 system. Our results suggest that superconductivity can also be easily induced in the FeAs family by substituting the Fe with Pt with almost the similar maximum transition temperatures as doping Ni, Co, Rh, and Ir. |
| 收录类别 | SCI |
| 资助信息 | Natural Science Foundation of China; Ministry of Science and Technology of China [2006CB601000, 2006CB921802]; Chinese Academy of Sciences |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/54067]  |
| 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 | Zhu, XY,Han, F,Mu, G,et al. Superconductivity induced by doping platinum in BaFe2As2[J]. PHYSICAL REVIEW B,2010,81(10). |
| APA | Zhu, XY.,Han, F.,Mu, G.,Cheng, P.,Tang, J.,...&Wen, HH.(2010).Superconductivity induced by doping platinum in BaFe2As2.PHYSICAL REVIEW B,81(10). |
| MLA | Zhu, XY,et al."Superconductivity induced by doping platinum in BaFe2As2".PHYSICAL REVIEW B 81.10(2010). |
入库方式： OAI收割
来源：物理研究所
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