Quantum-well states in copper thin films
文献类型：期刊论文
| 作者 | R. K. Kawakami ; E. Rotenberg ; H. J. Choi ; E. J. Escorcia-Aparicio ; M. O. Bowen ; J. H. Wolfe ; E. Arenholz ; Z. D. Zhang ; N. V. Smith ; Z. Q. Qiu |
| 刊名 | Nature
 |
| 出版日期 | 1999 |
| 卷号 | 398期号:6723页码:132-134 |
| 关键词 | magnetoresistance superlattices |
| ISSN号 | 0028-0836 |
| 中文摘要 | A standard exercise in elementary quantum mechanics is to describe the properties of an electron confined in a potential well. The solutions of Schrodinger's equation are electron standing waves-or 'quantum-well' states-characterized by the quantum number n, the number of half-wavelengths that span the well. Quantum-well states can be experimentally realized in a thin film, which confines the motion of the electrons in the direction normal to the film: for layered semiconductor quantum wells, the aforementioned quantization condition provides (with the inclusion of boundary phases) a good description of the quantum-well states. The presence of such states in layered metallic nanostructures is believed to underlie many intriguing phenomena, such as the oscillatory magnetic coupling of two ferromagnetic layers across a non-magnetic layer(1,2) and giant magnetoresistance(3). But our understanding of the properties of the quantum-well states in metallic structures is still limited. Here we report photoemission experiments that reveal the spatial variation of the quantum-well wavefunction within a thin copper film. Our results confirm an earlier proposal(4) that the amplitude of electron waves confined in a metallic thin film is modulated by an envelope function (of longer wavelength), which plays a key role in determining the energetics of the quantum-well states. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/37389]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | R. K. Kawakami,E. Rotenberg,H. J. Choi,et al. Quantum-well states in copper thin films[J]. Nature,1999,398(6723):132-134. |
| APA | R. K. Kawakami.,E. Rotenberg.,H. J. Choi.,E. J. Escorcia-Aparicio.,M. O. Bowen.,...&Z. Q. Qiu.(1999).Quantum-well states in copper thin films.Nature,398(6723),132-134. |
| MLA | R. K. Kawakami,et al."Quantum-well states in copper thin films".Nature 398.6723(1999):132-134. |
入库方式： OAI收割
来源：金属研究所
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