Normal state transport properties in single crystals of ba1-xkxfe2as2 and ndfeaso1-xfx
文献类型：期刊论文
| 作者 | Luo, H. Q.; Cheng, P.; Wang, Z. S.; Yang, H.; Jia, Y.; Fang, L.; Ren, C.; Shan, L.; Wen, H. H.1 |
| 刊名 | Physica c-superconductivity and its applications
 |
| 出版日期 | 2009-05-01 |
| 卷号 | 469期号:9-12页码:477-484 |
| 关键词 | Feas-based superconductors Single crystals Transport Hall effect Magnetoresisitance |
| ISSN号 | 0921-4534 |
| DOI | 10.1016/j.physc.2009.03.032 |
| 通讯作者 | Wen, h. h.(hhwen@aphy.iphy.ac.cn) |
| 英文摘要 | Hall effect and magnetoresistance delta rho/rho(0) (mr) in the normal state have been measured oil single crystals of ba1-xkxfe2as2 and ndfeaso1-xfx. detailed analysis reveal the following conclusions: (1) for the parent phases of ba1-xkx fe2as2 and ndfeaso1-xfx, large hall effect and mr with strong temperature dependence were observed below a characteristic temperature corresponding to the anti ferromagnetic/structural transition. the field dependence of the hall resistivity p, exhibits a non-linear behavior, which is accompanied by the violation of the b-square feature of the longitudinal magnetoresistivity, delta rho(xx)(b)/rho(xx)(0). closer inspection further indicates that they are well related to each other and could be attributed to the multi-band effect or spin-related scattering. (2) the superconducting samples show much smaller hall coefficient and mr in the normal state. the hall coefficient shows a weaker temperature dependence compared to the parent phase, while the mean scattering rate 1/tau(h) has a power-law like temperature dependence as 1/tau(h) proportional to t-n (n = 2-3). (3) for a ba1-xkxfe2 as-2 sample with t-c = 36 k, the field dependence of mr is complicated and the feature varies in different temperature regions. a drastic change of delta rho/rho(0) was found between 80 k and 100 k, which corresponds very well to the maximum of the temperature derivative of the resistivity. this may be attributed to the spin-related scattering of electrons. (4) a comparison between the parent phase and the superconducting sample with t, = 50 k in ndfeaso1-xfx suggests that the electronic transport properties in the normal state cannot be easily understood with the simple multi-band model, while a picture concerning a suppression to the quasiparticle density of states at the fermi energy is more reasonable. (c) 2009 elsevier b.v. all rights |
| WOS关键词 | PHASE-DIAGRAM ; SUPERCONDUCTIVITY ; MAGNETORESISTANCE ; LAO1-XFXFEAS ; COMPOUND |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Applied |
| 语种 | 英语 |
| WOS记录号 | WOS:000267191500021 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2373720 |
| 专题 | 物理研究所 |
| 通讯作者 | Wen, H. H. |
| 作者单位 | 1.Natl Lab Superconduct, Inst Phys, Beijing 100190, Peoples R China 2.Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Luo, H. Q.,Cheng, P.,Wang, Z. S.,et al. Normal state transport properties in single crystals of ba1-xkxfe2as2 and ndfeaso1-xfx[J]. Physica c-superconductivity and its applications,2009,469(9-12):477-484. |
| APA | Luo, H. Q..,Cheng, P..,Wang, Z. S..,Yang, H..,Jia, Y..,...&Wen, H. H..(2009).Normal state transport properties in single crystals of ba1-xkxfe2as2 and ndfeaso1-xfx.Physica c-superconductivity and its applications,469(9-12),477-484. |
| MLA | Luo, H. Q.,et al."Normal state transport properties in single crystals of ba1-xkxfe2as2 and ndfeaso1-xfx".Physica c-superconductivity and its applications 469.9-12(2009):477-484. |
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