Thermopower and GMR of a single Co-Cu multilayer nanowire

Author

Gravier, L. ; Wegrowe, J.E. ; Wade, T. ; Fabian, A. ; Ansermet, J.-P.

Author_Institution

Inst. de Phys. des Nanostructures (IPN), Lausanne, Switzerland

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

2700

Lastpage

2702

Abstract

We introduce here a novel technique specifically designed to measure the thermoelectrical properties of nanoscale ferromagnetic wires, prepared by electrodeposition in nanoporous membranes. The conditions of measurements have been determined through experiments performed on uniform Co and Cu wires made in different kinds of membranes at different temperatures, from 300 K down to 70 K. We then investigated the magnetic field dependence of Co-Cu multilayer nanowires in the current-perpendicular-to-plane geometry: the relation between the giant magnetoresistance and the magnetothermopower demonstrated the efficiency of this experimental technique.

Keywords

cobalt; copper; electron spin polarisation; ferromagnetic materials; giant magnetoresistance; magnetic multilayers; nanostructured materials; quantum wires; thermoelectric power; 300 to 70 K; Co-Cu; Seebeck coefficients; current induced magnetization reversal; current-perpendicular-to-plane geometry; electrodeposition; electron spin polarization; giant magnetoresistance; magnetic field dependence; magnetothermopower; nanoporous membranes; nanoscale ferromagnetic wires; single multilayer nanowire; strong local heating; temperature dependence; thermoelectrical properties; thermopower; Biomembranes; Current measurement; Giant magnetoresistance; Magnetic field measurement; Nanoporous materials; Nonhomogeneous media; Performance evaluation; Temperature dependence; Thermoelectricity; Wires;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.803151

Filename

1042323