Electric Field Induced Collapse of Charge-Ordered Phase in Manganites

Details Electric Field Induced Collapse of Charge-Ordered Phase in Manganites Electric Field Induced Collapse of Charge-Ordered Phase in Manganites

2006-06-27

arxiv.org/abs/cond-mat/0606682v4

J. Phys.: Condens. Matter 19 (2007) 266202

Physics

Condensed Matter

Materials Science

4 pages, 3 figures

Scientific paper

10.1088/0953-8984/19/26/266202

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.

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