Enhancement of giant magnetoresistance due to spin mixing in magnetic multilayers with a superconducting contact

F. Taddei; S. Sanvito; C. J. Lambert

doi:10.1103/PhysRevB.63.012404

← Back to search

Enhancement of giant magnetoresistance due to spin mixing in magnetic multilayers with a superconducting contact

F. Taddei, S. Sanvito, C. J. Lambert

DOI 10.1103/PhysRevB.63.012404 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

We study the giant magnetoresistance (GMR) ratio in magnetic multiayers with a single superconducting contact in the presence of spin-mixing processes. It has been recently shown [F. Taddei, S. Sanvito, J. H. Jefferson, and C. J. Lambert, Phys. Rev. Lett. 82, 4938 (1999)] that the GMR ratio of magnetic multilayers is strongly suppressed by the presence of a superconducting contact when spin flipping is not allowed. In this paper we demonstrate that the GMR ratio can be dramatically enhanced by spin-orbit interaction and/or noncollinear magnetic moments. The system is described using a tight-binding model with either s−p−d or s−d atomic orbitals per site.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown