Interface Stability in Hybrid Transition Metal-Oxide Magnetic Junctions

MRS Online Proceedings Library volume 623, Article number: 51 (2000) Cite this article

Abstract

Recent experiments revealed an apparently bias-dependent tunneling magnetoresistance between a transition metal (such as Fe, Co) and an oxide barrier such as SrTiO3. We examine the materials issues involved in this type of hybrid transition metal-oxide junctions. The junction interface is shown to be unstable against thermal treatment or high-bias current stress. We conclude that the junction magnetoresistance is largely determined by the formation of an interface oxide layer different from the barrier or the transition metal electrode themselves.

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Affiliations

  1. Ibm T. J. Watson Research Center, PO Box 218, Yorktown Heights, NY, 10598, USA

    J. Z. Sun

  2. Ibm Almaden Research Center, 650 Harry Road, San Jose, CA, 95120, USA

    K. P. Roche & S. S. P. Parkin

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  1. J. Z. Sun
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  2. K. P. Roche
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  3. S. S. P. Parkin
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Correspondence to J. Z. Sun.

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Sun, J.Z., Roche, K.P. & Parkin, S.S.P. Interface Stability in Hybrid Transition Metal-Oxide Magnetic Junctions. MRS Online Proceedings Library 623, 51 (2000). https://doi.org/10.1557/PROC-623-51

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