Large anisotropy of spin polarization in Heusler alloy Ni(2)MnGa induced by martensitic transformation
文献类型：期刊论文
| 作者 | Zhu, ZY ; Zhang, HW ; Xu, SF ; Chen, JL ; Cao, ZX ; Wu, GH |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 2008 |
| 卷号 | 103期号:9 |
| 关键词 | FIELD-INDUCED STRAINS GIANT MAGNETORESISTANCE ELECTRONIC-STRUCTURE FERROMAGNETS EXCHANGE PHASE |
| ISSN号 | 0021-8979 |
| 通讯作者 | Zhu, ZY: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | Spin polarization both in the cubic austenitic and tetragonal martensitic phases of the Ni(2)MnGa alloy has been investigated using first-principles calculations combined with classical Bloch-Boltzmann transport theory. It is shown that the degree of spin polarization, while decreasing from 42% in the < 001 > directions of the austenitic phase to 30% in the [100] direction of the martensitic phase, rises to 75% in the [001] direction of the martensitic phase, resulting from a preferential reconstruction of the spin-down Fermi surfaces upon martensitic transformation. With this finding, various recent intriguing electrical measurements upon Ni(2)MnGa across the martensitic transformation can find an explanation. This also opens a way of searching for giant magnetoresistance materials. (C) 2008 American Institute of Physics. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/40577]  |
| 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 | Zhu, ZY,Zhang, HW,Xu, SF,et al. Large anisotropy of spin polarization in Heusler alloy Ni(2)MnGa induced by martensitic transformation[J]. JOURNAL OF APPLIED PHYSICS,2008,103(9). |
| APA | Zhu, ZY,Zhang, HW,Xu, SF,Chen, JL,Cao, ZX,&Wu, GH.(2008).Large anisotropy of spin polarization in Heusler alloy Ni(2)MnGa induced by martensitic transformation.JOURNAL OF APPLIED PHYSICS,103(9). |
| MLA | Zhu, ZY,et al."Large anisotropy of spin polarization in Heusler alloy Ni(2)MnGa induced by martensitic transformation".JOURNAL OF APPLIED PHYSICS 103.9(2008). |
入库方式： OAI收割
来源：物理研究所
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