Significant enhancement of upper critical fields by doping and strain in iron-based superconductors
文献类型：期刊论文
| 作者 | Tarantini, C ; Gurevich, A ; Jaroszynski, J ; Balakirev, F ; Bellingeri, E ; Pallecchi, I ; Ferdeghini, C ; Shen, B ; Wen, HH ; Larbalestier, DC |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2011 |
| 卷号 | 84期号:18 |
| 关键词 | HIGH-TEMPERATURE SUPERCONDUCTIVITY |
| ISSN号 | 1098-0121 |
| 通讯作者 | Tarantini, C (reprint author), Florida State Univ, Appl Superconduct Ctr, Natl High Magnet Field Lab, 2031 E Paul Dirac Dr, Tallahassee, FL 32310 USA. |
| 中文摘要 | We report measurements up to 85 Tesla of the upper critical fields H(c2)(T) on Ba(1-x)K(x)As(2)Fe(2) single crystals and FeSe(1-x)Te(x) films tuned by doping and strain. We observed an H(c2) enhancement by more than 25 T at low temperatures for the optimally doped Ba(1-x)K(x)As(2)Fe(2) as compared to the previous measurements and extraordinarily high slopes of dH(c2)/dT = 250-500 T/K near T(c) in FeSe(1-x)Te(x), indicating almost-complete suppression of orbital pair breaking. Theoretical analysis of H(c2)(T) suggests an inhomogeneous Fulde-Ferrel-Larkin-Ovchinnikov state below 10 K for H//ab in the optimally doped Ba(1-x)K(x)As(2)Fe(2) and below 3K for H//c and 9K for H//ab in FeSe(1-x)Te(x). The analysis also shows that H(c2) in a multiband Fe-based superconductor can be significantly enhanced by doping and strain by shrinking and expanding different pockets of the Fermi surface, which can be more effective than the conventional way of increasing H(c2) by nonmagnetic impurities. |
| 收录类别 | SCI |
| 资助信息 | US Natural Science Foundation [DMR-0654118]; State of Florida; US Department of Energy; Ministry of Science and Technology of China [2011CBA01000]; Natural Science Foundation of China |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/52545]  |
| 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 | Tarantini, C,Gurevich, A,Jaroszynski, J,et al. Significant enhancement of upper critical fields by doping and strain in iron-based superconductors[J]. PHYSICAL REVIEW B,2011,84(18). |
| APA | Tarantini, C.,Gurevich, A.,Jaroszynski, J.,Balakirev, F.,Bellingeri, E.,...&Larbalestier, DC.(2011).Significant enhancement of upper critical fields by doping and strain in iron-based superconductors.PHYSICAL REVIEW B,84(18). |
| MLA | Tarantini, C,et al."Significant enhancement of upper critical fields by doping and strain in iron-based superconductors".PHYSICAL REVIEW B 84.18(2011). |
入库方式： OAI收割
来源：物理研究所
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