Spin-dependent Boltzmann equation and GMR in metallic granular systems

• Tipo: Artigo em Revista Científica Internacional
• Data: 2002

Autores

Lopes, JMV (Autor) Outra; dos Santos, JMBL (Autor) FCUP; Pogorelov, YG (Autor) FCUP

Revista

Título: Journal of Magnetism and Magnetic Materials

Vol. 242

Páginas: 482-484

ISSN: 0304-8853

Editora: Elsevier

Indexação

ISI Web of Knowledge - 3 Citações

Scopus - 4 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia dos materiais

Outras Informações

ID Authenticus: P-000-PW8

DOI: 10.1016/s0304-8853(01)01056-3

Abstract (EN): Based on explicit treatment of spin-dependent components of non-equilibrium distribution function within the formalism of Boltzmann equation, the problem of magnetotransport in a system of magnetic granules embedded into a non-magnetic metallic host has been considered, For a specific model of spin-dependent perturbation potential by the granules, an exact solution for distribution function has been found, yielding a magnetoresistance ratio which contains, besides the common long-range-order term similar to m(2) (the square of uniform magnetization), a term by correlations between magnetic granules. The obtained peculiar structure of the distribution function in the reciprocal space underlines the specifies of transport processes in such a system, compared to the known behavior of uniform metals.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 3