Tunneling magnetoresistance in Fe3Si/MgO/Fe3Si(001) magnetic tunnel junctions
文献类型：期刊论文
| 作者 | Tao, LL ; Liang, SH ; Liu, DP ; Wei, HX ; Wang, J ; Han, XF |
| 刊名 | APPLIED PHYSICS LETTERS
 |
| 出版日期 | 2014 |
| 卷号 | 104期号:17 |
| ISSN号 | 0003-6951 |
| 通讯作者 | Han, XF (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We present a theoretical study of the tunneling magnetoresistance (TMR) and spin-polarized transport in Fe3Si/MgO/Fe3Si(001) magnetic tunnel junction (MTJ). It is found that the spin-polarized conductance and bias-dependent TMR ratios are rather sensitive to the structure of Fe3Si electrode. From the symmetry analysis of the band structures, we found that there is no spin-polarized Delta(1) symmetry bands crossing the Fermi level for the cubic Fe3Si. In contrast, the tetragonal Fe3Si driven by in-plane strain reveals half-metal nature in terms of Delta(1) state. The giant TMR ratios are predicted for both MTJs with cubic and tetragonal Fe3Si electrodes under zero bias. However, the giant TMR ratio resulting from interface resonant transmission for the former decreases rapidly with the bias. For the latter, the giant TMR ratio can maintain up to larger bias due to coherent transmission through the majority-spin Delta(1) channel. (C) 2014 AIP Publishing LLC. |
| 资助信息 | State Key Project of Fundamental Research of Ministry of Science and Technology [MOST] [2010CB934400]; National Natural Science Foundation [NSFC] [11374351, 11174341, 11222432]; Research Grant Council of HKSAR [HKU 705212P] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/58915]  |
| 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 | Tao, LL,Liang, SH,Liu, DP,et al. Tunneling magnetoresistance in Fe3Si/MgO/Fe3Si(001) magnetic tunnel junctions[J]. APPLIED PHYSICS LETTERS,2014,104(17). |
| APA | Tao, LL,Liang, SH,Liu, DP,Wei, HX,Wang, J,&Han, XF.(2014).Tunneling magnetoresistance in Fe3Si/MgO/Fe3Si(001) magnetic tunnel junctions.APPLIED PHYSICS LETTERS,104(17). |
| MLA | Tao, LL,et al."Tunneling magnetoresistance in Fe3Si/MgO/Fe3Si(001) magnetic tunnel junctions".APPLIED PHYSICS LETTERS 104.17(2014). |
入库方式： OAI收割
来源：物理研究所
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