Large magnetoresistance using hybrid spin filter devices

LeClair, P.; Ha, J. K.; Swagten, H. J. M.; Kohlhepp, J. T.; van de Vin, C. H.; de Jonge, W. J. M.
January 2002
Applied Physics Letters;1/28/2002, Vol. 80 Issue 4, p625
Academic Journal
A magnetic “spin filter” tunnel barrier, sandwiched between a nonmagnetic metal and a magnetic metal, is used to create a 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%. © 2002 American Institute of Physics.


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