Electric Field Induced Collapse of Charge-Ordered Phase in Manganites

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The colossal electroresistance in manganites is a concomitant of the electric field induced insulator-to-metal phase transition. A phenomenological phase transition model is proposed to study this electric field induced collapse of charge-ordered phase. The hysteresis of the phase transition is well explained using the effective medium approximation. The volume fraction of metallic region at the metal-to-insulator transition point is estimated as 30%. In addition, it is found that the critical electric field to melt the charge-ordered phase will decrease with the applied magnetic field.
4 pages, 3 figures

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Materials Science, Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/131778

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0606682
 http://arxiv.org/abs/cond-mat/0606682
 J. Phys.: Condens. Matter 19 (2007) 266202
 doi:10.1088/0953-8984/19/26/266202

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