Time-dependent transport effects in CoFe/Al2O3 discontinuous multilayers

• Tipo: Artigo em Revista Científica Internacional
• Data: 2000

Autores

G.N. Kakazei (Autor) Outra; Lopes, AML (Autor) Outra; pogorelov, y. g. (Autor) FCUP; Santos, JAM (Autor) Outra; sousa, j. b. (Autor) FCUP; Freitas, PP (Autor) Outra; Cardoso, S (Autor) Outra; Snoeck, E (Autor) Outra

Revista

Título: Journal of Applied Physics

Vol. 87

Páginas: 6328-6330

ISSN: 0021-8979

Editora: American Institute of Physics

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 5 Citações

Outras Informações

ID Authenticus: P-001-066

DOI: 10.1063/1.372695

Abstract (EN): Discontinuous multilayered metal-insulator Co80Fe20(t)/Al2O3(30 Angstrom) thin films with different values of nominal thickness t of metal layer were prepared by ion beam deposition. At t < 14 Angstrom, a new phenomenon of slow electric relaxation was found, suggesting formation of highly nonequilibrium electronic states in the process of tunnel transport in such systems. An extension of the well-known Sheng-Abeles approach on the case of finite concentrations of charged granules is proposed. Within mean-field approximation, it gives a general picture of this phenomenon, though the corrections due to correlation between charges can be essential. (C) 2000 American Institute of Physics. [S0021-8979(00)74708-6].

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 3