Influence of roughness and disorder on tunneling magnetoresistance

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Xu, P.X. and Karpan, V.M. and Xia, K. and Zwierzycki, M. and Marushchenko, I. and Kelly, P.J. (2006) Influence of roughness and disorder on tunneling magnetoresistance. Physical Review B: Condensed matter and materials physics, 73 (18). p. 180402. ISSN 1098-0121

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Abstract:A systematic, quantitative study of the effect of interface roughness and disorder on the magnetoresistance of FeCo|vacuum|FeCo magnetic tunnel junctions is presented based upon parameter-free electronic structure calculations. Surface roughness is found to have a very strong effect on the spin-polarized transport while that of disorder in the leads (leads consisting of a substitutional alloy) is weaker but still sufficient to suppress the huge tunneling magnetoresistance (TMR) predicted for ideal systems.
Item Type:Article
Copyright:© 2006 The American Physical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/59092
Official URL:http://dx.doi.org/10.1103/PhysRevB.73.180402
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Metis ID: 231717