Impurity effects on the normal-state transport properties of Ba0.5K0.5Fe2As2 superconductors
文献类型：期刊论文
| 作者 | Li, J ; Yuan, J ; Ji, M ; Zhang, GF ; Ge, JY ; Feng, HL ; Yuan, YH ; Hatano, T ; Hu, W ; Jin, K ; Schwarz, T ; Kleiner, R ; Koelle, D ; Yamaura, K ; Wang, HB ; Wu, PH ; Takayama-Muromachi, E ; Vanacken, J ; Moshchalkov, VV |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2014 |
| 卷号 | 90期号:2 |
| ISSN号 | 1098-0121 |
| 通讯作者 | Li, J (reprint author), Katholieke Univ Leuven, INPAC, Celestijnenlaan 200D, B-3001 Louvain, Belgium. |
| 中文摘要 | We investigated the normal-state resistivity rho(xx) (T) and the Hall effect in Zn-and Co-doped Ba0.5K0.5Fe2As2 single-crystalline microbridges. A crossover temperature T* was observed in the temperature dependency of the longitudinal resistivity rho(xx) (T), which separates rho(xx) (T) into temperature-linear and temperature-nonlinear regions. Above T*, the carriers in Ba0.5K0.5Fe2As2 and Co-doped Ba0.5K0.5Fe1.94Co0.06As2 demonstrate electronlike behavior and an anomalous nonlinear magnetic field dependence of the Hall voltage with a sign reversal. By contrast, the Zn-doped Ba0.5K0.5Fe1.94Zn0.06As2 behaves like a hole type and the Hall coefficient is independent of the magnetic field. The field-induced sign reversal of the Hall coefficient of undoped and Co-doped samples depends on the field modification on the mobility and hole/electron concentration ratio. The T-2-dependent Hall angle of a nonmagnetic Zn-doped crystal is observed as a nearly parallel shift from that of the impurity-free crystal in the low-temperature region, indicating that the Zn induces a weak change of the spinons excitations, while increasing the number of scattering centers. The Co works as a nonmagnetic impurity as well, while it provides both spinons excitations and impurity scattering. |
| 资助信息 | Methusalem - Flemish government; EU-FP6-COST Action [MP1201]; World Premier International Research Center from MEXT; JSPS [25289233, 25289108]; National Natural Science Foundation of China [11234006, 51102188]; Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program) from JSPS |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59529]  |
| 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, J,Yuan, J,Ji, M,et al. Impurity effects on the normal-state transport properties of Ba0.5K0.5Fe2As2 superconductors[J]. PHYSICAL REVIEW B,2014,90(2). |
| APA | Li, J.,Yuan, J.,Ji, M.,Zhang, GF.,Ge, JY.,...&Moshchalkov, VV.(2014).Impurity effects on the normal-state transport properties of Ba0.5K0.5Fe2As2 superconductors.PHYSICAL REVIEW B,90(2). |
| MLA | Li, J,et al."Impurity effects on the normal-state transport properties of Ba0.5K0.5Fe2As2 superconductors".PHYSICAL REVIEW B 90.2(2014). |
入库方式： OAI收割
来源：物理研究所
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