Artículo
Current-induced effects in La5/8-yPryCa 3/8MnO3 (y = 0.35) single crystals
Garbarino, Gaston Leonel
; Monteverde, Martin; Acha, Carlos Enrique
; Levy, Pablo Eduardo
; Quintero, M.; Koo, T.Y.; Cheong, S.-W.
; Monteverde, Martin; Acha, Carlos Enrique
; Levy, Pablo Eduardo
; Quintero, M.; Koo, T.Y.; Cheong, S.-W.
Fecha de publicación:
12/2004
Editorial:
Elsevier Science
Revista:
Physica B: Condensed Matter
ISSN:
0921-4526
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
DC electrical current-dependent resistance and pulsed current-voltage characteristics as a function of temperature of mixed valent Mn oxide-based La5/8-yPryCa0.375MnO3 (y = 0.35) single crystals are reported. We find that the low-temperature regime of this material is strongly current dependent. For small current densities (∼ 10μA/cm2), the metal-insulator transition related to the low-temperature enlargement of the ferromagnetic fraction is not observed down to 10K. Higher current densities causes a large decrease of the resistance, which is temperature dependent and exhibits memory effects. Our results are interpreted within a scenario of strong competition between charge and ferromagnetic ordering. © 2004 Published by Elsevier B.V.
Palabras clave:
Manganites
,
Non-Linear Effects
,
Percolation
,
Phase Separation
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Tamaño:
209.7Kb
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PDF
Licencia
Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción:
Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
Colecciones
Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Citación
Garbarino, Gaston Leonel; Monteverde, Martin; Acha, Carlos Enrique; Levy, Pablo Eduardo; Quintero, M.; et al.; Current-induced effects in La5/8-yPryCa 3/8MnO3 (y = 0.35) single crystals; Elsevier Science; Physica B: Condensed Matter; 354; 1-4 SPEC. ISS.; 12-2004; 16-19
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