Quantum well states of a spacer in a magnetic metal sandwich system and exchange coupling

Zhongcheng Wang; Shichang Zou; Shaofeng Wang

doi:10.1117/12.190789

26 October 1994 Quantum well states of a spacer in a magnetic metal sandwich system and exchange coupling

Zhongcheng Wang, Shichang Zou, Shaofeng Wang

Proceedings Volume 2364, Second International Conference on Thin Film Physics and Applications; (1994) https://doi.org/10.1117/12.190789
Event: Thin Film Physics and Applications: Second International Conference, 1994, Shanghai, China

Abstract

In this paper a new, modified s-d model for studying the quantum well states in a metal space of a magnetic metal sandwich structure is presented. The model is based on the following consideration that (1) in the direction perpendicular to the surface the conduction electron is limited in an infinite deep potential well; (2) the localized magnetic moment model is adapted for describing the atoms in the ferromagnetic layers; (3) the spin-flip scattering process is neglected because of the Heisenburg interaction. The resulted electron states are that the energy level is split into two symmetrical ones for a ferromagnetic configuration, which is in agreement with the recent experiments on the exchange-split spin- polarized electronic states. It is found that this simple model can explain the oscillatory exchange coupling with long period well.

Citation Download Citation

Zhongcheng Wang, Shichang Zou, and Shaofeng Wang "Quantum well states of a spacer in a magnetic metal sandwich system and exchange coupling", Proc. SPIE 2364, Second International Conference on Thin Film Physics and Applications, (26 October 1994); https://doi.org/10.1117/12.190789

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