Switching phenomena in La2/3Ca1/3MnO3/EU2CuO4/La2/3Ca1/3MnO3 ramp-type junctions
文献类型：期刊论文
| 作者 | Tang, WH ; Kam, TL ; Li, LH ; Gao, J |
| 刊名 | JOURNAL OF PHYSICS-CONDENSED MATTER
 |
| 出版日期 | 2004 |
| 卷号 | 16期号:18页码:3133 |
| 关键词 | BA-CU-O THIN-FILMS MANGANITES RESISTIVITY SEPARATION TRANSPORT |
| ISSN号 | 0953-8984 |
| 通讯作者 | Tang, WH (reprint author), Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | Ramp-type junctions of p-type La2/3Ca1/3MnO3 (LCMO) electrodes with n-type Eu2CuO4 (ECO) barriers have been fabricated by rf magnetron sputtering, photolithography and ion beam etching. A tunnelling effect was observed in junctions with colossal magnetoresistive materials. Interestingly, a discontinuity was observed in the I-V curves below the metal-insulator transition temperature (T-p) of LCMO electrodes. With increasing current, the voltage across the junction increases linearly at first, then deviates from linearity, then a discontinuity occurs and finally the voltage recovers its linearity. With changing temperature, the discontinuity in the I-V curves happens at the same voltage of 209 mV, but starts at different currents. The discontinuity starting current (I-c) decreases with increase of the temperature. The discontinuity disappears above T-p. There is a hysteresis near the discontinuity when the current increases and decreases. The discontinuity in the I-V curves could indicate a novel switching process. This switching phenomenon occurs only in the ferromagnetic metal state and strongly suggests a magnetism related effect. The physics of the switching process has not been understood yet, but it could be of interest for potential applications in spintronics devices. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/54254]  |
| 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 | Tang, WH,Kam, TL,Li, LH,et al. Switching phenomena in La2/3Ca1/3MnO3/EU2CuO4/La2/3Ca1/3MnO3 ramp-type junctions[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2004,16(18):3133. |
| APA | Tang, WH,Kam, TL,Li, LH,&Gao, J.(2004).Switching phenomena in La2/3Ca1/3MnO3/EU2CuO4/La2/3Ca1/3MnO3 ramp-type junctions.JOURNAL OF PHYSICS-CONDENSED MATTER,16(18),3133. |
| MLA | Tang, WH,et al."Switching phenomena in La2/3Ca1/3MnO3/EU2CuO4/La2/3Ca1/3MnO3 ramp-type junctions".JOURNAL OF PHYSICS-CONDENSED MATTER 16.18(2004):3133. |
入库方式： OAI收割
来源：物理研究所
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