Nonequilibrium breakdown of a correlated insulator through pattern formation

Article

关键词: METAL TRANSITION;    QUANTUM;    SYSTEMS;   

DOI  :  10.1103/PhysRevB.93.144305

来源: SCIE

【 摘 要 】

We study the breakdown of an interaction-induced insulator under an imposed bias voltage. A rich voltage-temperature phase diagram is found that contains phases with a spatially patterned charge gap. Nonequilibrium conditions are shown to be able to change the antiferromagnetic nature of the equilibrium correlations. Above a threshold voltage, smaller than the charge gap, the formation of patterns occurs together with the emergence of midgap states yielding a finite conductance. We discuss the experimental implications of this proposed scenario for the breakdown of the insulating state.

【 授权许可】

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