Strong nonlinearity and hysteresis of Hall resistance versus magnetization in nickel thin films
文献类型：期刊论文
| 作者 | Song, XH ; Fan, J ; Zhang, XG ; Zhang, DL |
| 刊名 | PHYSICS LETTERS A
 |
| 出版日期 | 2010 |
| 卷号 | 374期号:37页码:3881 |
| 关键词 | BERRY-PHASE FERROMAGNETICS MANGANITES |
| ISSN号 | 0375-9601 |
| 通讯作者 | Zhang, DL (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | The anomalous Hall effect (AHE) in ferromagnetic materials is perhaps one of the oldest unresolved mysteries in physics. First observed in 1881, its mechanism is still a controversial topic today. The question remains whether AHE is caused by intrinsic (Berry phase and band structure) or extrinsic (defect scattering) effects or a combination of both. Here we present experimental observation in nickel thin films that seems to add to the mystery, but may in fact provide crucial clues for ultimately resolving the controversy. The key observation is that the Hall resistivity of nickel films is a strongly nonlinear function of the magnetization and displays clear hysteresis with respect to M. Specifically, at low temperatures, the anomalous Hall coefficient switches between two saturated values under the magnetic field with a narrow transition region, but with a strong hysteresis, in contrast to the slow saturation of the magnetization. The nonlinearity and the hysteresis become more apparent with decreasing temperature or film thickness. Despite the simplicity of the lattice and magnetic structure of nickel films, these results are outside our current understanding of AHE, whether using intrinsic or extrinsic mechanisms of AHE. It presents a challenge for these models, and may be used as a test of validity for both types of theories. (C) 2010 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 资助信息 | NSFC; Division of Scientific User Facilities, US DOE |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/53165]  |
| 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 | Song, XH,Fan, J,Zhang, XG,et al. Strong nonlinearity and hysteresis of Hall resistance versus magnetization in nickel thin films[J]. PHYSICS LETTERS A,2010,374(37):3881. |
| APA | Song, XH,Fan, J,Zhang, XG,&Zhang, DL.(2010).Strong nonlinearity and hysteresis of Hall resistance versus magnetization in nickel thin films.PHYSICS LETTERS A,374(37),3881. |
| MLA | Song, XH,et al."Strong nonlinearity and hysteresis of Hall resistance versus magnetization in nickel thin films".PHYSICS LETTERS A 374.37(2010):3881. |
入库方式： OAI收割
来源：物理研究所
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