title: Crossed Andreev reflection-induced magnetoresistance.
abstract: We show that very large negative magnetoresistance can be obtained in magnetic trilayers in a current-in-plane geometry owing to the existence of crossed Andreev reflection. This spin valve consists of a thin superconducting film sandwiched between two ferromagnetic layers whose magnetization is allowed to be either parallelly or antiparallelly aligned. For a suitable choice of structure parameters and nearly fully spin-polarized ferromagnets, the magnetoresistance can exceed -80%. Our results are relevant for the design and implementation of spintronic devices exploiting ferromagnet-superconductor structures.
authors.affiliation: NEST CNR-INFM and Scuola Normale Superiore, I-56126 Pisa, Italy. giazotto@sns.it
authors.forename: Francesco
authors.initials: F
authors.lastname: Giazotto
authors.forename: Fabio
authors.initials: F
authors.lastname: Taddei
authors.forename: Fabio
authors.initials: F
authors.lastname: Beltram
authors.forename: Rosario
authors.initials: R
authors.lastname: Fazio