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Large magnetoresistance using hybrid spin filter devices

P. LeClair·J. K. Ha·H. J. M. Swagten·C. H. van de Vin·J. T. Kohlhepp·W. J. M. de Jonge
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Abstract

A magnetic "spin filter" tunnel barrier, sandwiched between a non-magnetic metal and a magnetic metal, is used to create a new magnetoresistive tunnel device, somewhat analogous to an optical polarizer-analyzer configuration. The resistance of these trilayer structures depends on the relative magnetization orientation of the spin filter and the ferromagnetic electrode. The spin filtering in this configuration yields a previously unobserved magnetoresistance effect, exceeding 100%.

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P. LeClair, J. K. Ha, H. J. M. Swagten, C. H. van de Vin, J. T. Kohlhepp, W. J. M. de Jonge. 2001-07-27. Large magnetoresistance using hybrid spin filter devices. https://doi.org/10.1063/1.1436284

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