Magnetoresistance in Magnetic Tunnel Junctions with Nonmagnetic Metallic Spacers and Cap Layers

Chin. Phys. Lett.

1999, Vol. 16

Issue (1): 62-64 DOI:

Original Articles

Magnetoresistance in Magnetic Tunnel Junctions with Nonmagnetic Metallic Spacers and Cap Layers

ZHANG Wu-shou;LI Bo-zang

Institute of Physics & Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080

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ZHANG Wu-shou, LI Bo-zang 1999 Chin. Phys. Lett. 16 62-64

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Abstract In a free-electron approximation, transport properties of magnetic tunnel junctions with nonmagnetic metallic spacers and cap layers were studied. The magnetoresistance is oscillatory functions of the thicknesses of non-magnetic metallic spacers and ferromagnets, their period is determined by the Fermi surface properties of the metals, and magnetoresistances (up to about 10³%) much greater than those predicted by the Julliere's model are obtained. The results indicate that this structure has potential in designing spin-polarized tunneling devices.

Keywords: 75.70.Ak 75.70.Pa 85.30.Kk

Published: 01 January 1999

PACS:	75.70.Ak	(Magnetic properties of monolayers and thin films)
	75.70.Pa
	85.30.Kk	(Junction diodes)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1999/V16/I1/062

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