Spin-dependent tunneling spectroscopy for interface characterization of epitaxial Fe/MgO/Fe magnetic tunnel junctions
文献类型：期刊论文
| 作者 | Du, GX ; Wang, SG ; Ma, QL ; Wang, Y ; Ward, RCC ; Zhang, XG ; Wang, C ; Kohn, A ; Han, XF |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2010 |
| 卷号 | 81期号:6 |
| 关键词 | ROOM-TEMPERATURE MAGNETORESISTANCE TRANSMISSION STATES |
| ISSN号 | 1098-0121 |
| 通讯作者 | Wang, SG (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China. |
| 中文摘要 | Based on the device in recent experiments [S. M. Frolov et al., Phys. Rev. Lett. 102, 116802 (2009); Nature (London) 458, 868 (2009)], we propose an all-electrical scheme to prepare and readout a single spin state in a quantum dot (QD). We consider that the QD, which is subjected to a spin bias, has a single spin-degenerate energy level epsilon(d) in the presence of Coulomb interaction U. By tuning the energy level controlled experimentally by a gate voltage, write in and read out the spin information can be achieved in the following way. When the level epsilon(d) is within the spin bias window, a spin state can be written into the dot even for very weak spin bias. When both epsilon(d) and epsilon(d)+U are tuned to be out of the spin bias window, the initialized spin state can be preserved on the dot for a very long time (e.g., on the order of second), during which many qubit manipulations can be accomplished. Finally, by tuning the level epsilon(d)+U to the spin bias window, the spin state can be read out by measuring the charge current. |
| 收录类别 | SCI |
| 资助信息 | National Basic Research Program of China (MOST) [2009CB929203, 2006CB932200]; Chinese National Natural Science Foundation (NSFC) [50972163, 50721001]; Engineering and Physical Sciences Research Council (EPSRC) of U.K |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/52919]  |
| 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 | Du, GX,Wang, SG,Ma, QL,et al. Spin-dependent tunneling spectroscopy for interface characterization of epitaxial Fe/MgO/Fe magnetic tunnel junctions[J]. PHYSICAL REVIEW B,2010,81(6). |
| APA | Du, GX.,Wang, SG.,Ma, QL.,Wang, Y.,Ward, RCC.,...&Han, XF.(2010).Spin-dependent tunneling spectroscopy for interface characterization of epitaxial Fe/MgO/Fe magnetic tunnel junctions.PHYSICAL REVIEW B,81(6). |
| MLA | Du, GX,et al."Spin-dependent tunneling spectroscopy for interface characterization of epitaxial Fe/MgO/Fe magnetic tunnel junctions".PHYSICAL REVIEW B 81.6(2010). |
入库方式： OAI收割
来源：物理研究所
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