Thermal Hall conductivity as a probe of gap structure in multiband superconductors: The case of Ba1-xKxFe2As2
文献类型：期刊论文
| 作者 | Checkelsky, JG ; Thomale, R ; Li, L ; Chen, GF ; Luo, JL ; Wang, NL ; Ong, NP |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2012 |
| 卷号 | 86期号:18 |
| 关键词 | QUASI-PARTICLE YBA2CU3O7 CURRENTS VORTEX |
| ISSN号 | 1098-0121 |
| 通讯作者 | Checkelsky, JG (reprint author), Univ Tokyo, Dept Appl Phys, 7-3-1 Hongo, Tokyo 113, Japan. |
| 中文摘要 | The sign and profile of the thermal Hall conductivity kappa(xy) gives important insights into the gap structure of multiband superconductors. With this perspective, we have investigated kappa(xy) and the thermal conductivity kappa(xx) in Ba1-xKxFe2As2 which display large peak anomalies in the superconducting state. The anomalies imply that a large holelike quasiparticle (QP) population exists below the critical temperature T-c. We show that the QP mean free path inferred from kappa(xx) reproduces the observed anomaly in kappa(xy), providing a consistent estimate of a large QP population. Further, we demonstrate that the peak structure and holelike signal are consistent with a theoretical scenario where, despite potentially large gap variations on the electron pockets, the minimal homogeneous gap of the superconducting phase resides at a hole pocket. Implications for probing the gap structure in the broader class of pnictide superconductors are discussed. |
| 收录类别 | SCI |
| 资助信息 | US National Science Foundation (NSF) [DMR-0819860]; NSFC; 973 project of MOST; CAS of China; SITP fellowship by Stanford University; DFG-SPP [1458] |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/45724]  |
| 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 | Checkelsky, JG,Thomale, R,Li, L,et al. Thermal Hall conductivity as a probe of gap structure in multiband superconductors: The case of Ba1-xKxFe2As2[J]. PHYSICAL REVIEW B,2012,86(18). |
| APA | Checkelsky, JG.,Thomale, R.,Li, L.,Chen, GF.,Luo, JL.,...&Ong, NP.(2012).Thermal Hall conductivity as a probe of gap structure in multiband superconductors: The case of Ba1-xKxFe2As2.PHYSICAL REVIEW B,86(18). |
| MLA | Checkelsky, JG,et al."Thermal Hall conductivity as a probe of gap structure in multiband superconductors: The case of Ba1-xKxFe2As2".PHYSICAL REVIEW B 86.18(2012). |
入库方式： OAI收割
来源：物理研究所
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