The comprehensive phase evolution for Bi2Te3 topological compound as function of pressure
文献类型：期刊论文
| 作者 | Zhang, SJ ; Zhang, JL ; Yu, XH ; Zhu, J ; Kong, PP ; Feng, SM ; Liu, QQ ; Yang, LX ; Wang, XC ; Cao, LZ ; Yang, WG ; Wang, L ; Mao, HK ; Zhao, YS ; Liu, HZ ; Dai, X ; Fang, Z ; Zhang, SC ; Jin, CQ |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 2012 |
| 卷号 | 111期号:11 |
| 关键词 | HGTE QUANTUM-WELLS SINGLE DIRAC CONE INDUCED SUPERCONDUCTIVITY SPIN INSULATOR TRANSITION SURFACE |
| ISSN号 | 0021-8979 |
| 通讯作者 | Jin, CQ (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | Linear response and low frequency noise have been investigated in MgO double barrier magnetic tunnel junctions with a superparamagnetic Co50Fe50 free layer. Linear and hysteresis-free switching was observed for the Co50Fe50 thickness t <= 1 nm. A tunneling magnetoresistance ratio of up to 108% and large magnetic field sensitivity value of 61%/mT were obtained at room temperature when t = 1.0 nm. The angular dependence of magnetoresistance suggests that weak coupling between superparamagnetic islands in a 1.0 nm free layer permits continuous rotation of magnetization, whereas the islands in a 0.8 nm layer switch rather independently. The frequency dependence of noise power spectrum density and field dependence of Hooge parameter (alpha) also behave differently for junctions with 0.8 and 1.0 nm free layers. The noise sensitivity of 1.0 nm free layer junctions is independent of bias, and it is estimated to reach 400 pT/Hz 0.5 at 500 kHz. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4723836] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/44938]  |
| 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 | Zhang, SJ,Zhang, JL,Yu, XH,et al. The comprehensive phase evolution for Bi2Te3 topological compound as function of pressure[J]. JOURNAL OF APPLIED PHYSICS,2012,111(11). |
| APA | Zhang, SJ.,Zhang, JL.,Yu, XH.,Zhu, J.,Kong, PP.,...&Jin, CQ.(2012).The comprehensive phase evolution for Bi2Te3 topological compound as function of pressure.JOURNAL OF APPLIED PHYSICS,111(11). |
| MLA | Zhang, SJ,et al."The comprehensive phase evolution for Bi2Te3 topological compound as function of pressure".JOURNAL OF APPLIED PHYSICS 111.11(2012). |
入库方式： OAI收割
来源：物理研究所
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