Large magnetoresistance using hybrid spin filter devices

Details Large magnetoresistance using hybrid spin filter devices Large magnetoresistance using hybrid spin filter devices

2001-07-27

arxiv.org/abs/cond-mat/0107571v1

Physics

Condensed Matter

Materials Science

3.5 pages, 3 figures, submitted to Appl. Phys. Lett

Scientific paper

10.1063/1.1436284

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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