Barrier height and negative tunnel magnetoresistance

descriptionPublicationkeyboard_double_arrow_right Article 01 Feb 2004 English Publisher:Elsevier BVJournal:Solid State Communications, volume 129, pages 459-463 (issn: 0038-1098,

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Authors: Xue-Fei Liang; Wei Yang;

doi: 10.1016/j.ssc.2003.11.015

Barrier height and negative tunnel magnetoresistance

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Abstract

Abstract Based on the free-electron approximation method proposed by Slonczewski, we substitute the finite magnetic zone by a semi-infinite magnet. On this basis, the relationship between the tunnel magnetoresistance (TMR) and the barrier height of magnetic tunnel junction (MTJ) is studied. We find the TMR at small bias is always positive for various barrier heights when the MTJ has a symmetric configuration and the negative TMR can be observed when MTJ is with lower barrier height in the asymmetric condition.

Related Organizations

China University of Petroleum, Beijing
China (People's Republic of)

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