Time-dependent transport effects in CoFe/Al2O3 discontinuous multilayers

• Type: Article in International Scientific Journal
• Date: 2000

Authors

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

Journal

Title: Journal of Applied Physics

Vol. 87

Pages: 6328-6330

ISSN: 0021-8979

Publisher: American Institute of Physics

Indexing

ISI Web of Knowledge - 6 Citations

Scopus - 5 Citations

Other information

Authenticus ID: 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].

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 3