The Sr content influence on the positive magnetoresistance in La1-xSrxMnO3/Si heterojunctions
文献类型：期刊论文
| 作者 | Yang, F ; Jin, KJ ; Huang, YH ; He, M ; Lu, HB ; Yang, GZ |
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2010 |
| 卷号 | 19期号:8 |
| 关键词 | MOLECULAR-BEAM EPITAXY GIANT MAGNETORESISTANCE THIN-FILMS JUNCTIONS TRANSPORT |
| ISSN号 | 1674-1056 |
| 通讯作者 | Lu, HB (reprint author), Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We fabricated La1-xSrxMnO3/Si (LSMO/Si) heterojunctions with different Sr doping concentrations (x = 0.1, 0.2, 0.3) in LSMO and studied the Sr content influence on magnetoresistance (MR) ratio. The heterojunctions show positive MR and high sensitivity of MR ratio in a low applied magnetic field. The MR ratio is dependent on Sr content and the low Sr doping in LSMO causes a large positive MR in LSMO/Si junctions. The MR ratio for 0.1 Sr doping in the LSMO/Si heterostructure is 116% in 100 Oe (1 Oe=79.5775 A/m) at 210 K. The mechanism for the positive MR dependence on the doping density is considered to be the competition between the tunneling rate of electrons in e(g)(1) up arrow to t(2g) down arrow band and that to e(g)(2) up arrow band at the interface region of LSMO. The experimental results are in agreement with those observed in La0.9Sr0.1MnO3/SrNb0.01Ti0.99O3 p-n junction. The results indicate that choosing low doping concentration to improve the low field sensitivity of the heterojunction devices is a very efficacious method. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [50672120] |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/45479]  |
| 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 | Yang, F,Jin, KJ,Huang, YH,et al. The Sr content influence on the positive magnetoresistance in La1-xSrxMnO3/Si heterojunctions[J]. CHINESE PHYSICS B,2010,19(8). |
| APA | Yang, F,Jin, KJ,Huang, YH,He, M,Lu, HB,&Yang, GZ.(2010).The Sr content influence on the positive magnetoresistance in La1-xSrxMnO3/Si heterojunctions.CHINESE PHYSICS B,19(8). |
| MLA | Yang, F,et al."The Sr content influence on the positive magnetoresistance in La1-xSrxMnO3/Si heterojunctions".CHINESE PHYSICS B 19.8(2010). |
入库方式： OAI收割
来源：物理研究所
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