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arXiv 0811.0320cond-mat.str-elcond-mat.dis-nn
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无序Mott系统的能量分辨空间不均匀性

Energy-resolved spatial inhomogeneity of disordered Mott systems

E. C. Andrade, E. Miranda, V. Dobrosavljevic

摘要:

我们研究了弱到中等无序对二维T=0 Mott金属-绝缘体相变的影响。我们的模型计算表明,接近费米能的电子态在临界区域变得更加空间均匀。值得注意的是,更高的能量状态显示出相反的行为:它们在Mott转变附近显示出增强的空间不均匀性。我们认为,这种能量分辨的无序屏蔽是无序莫特系统的一个通用属性。

英文摘要:

We investigate the effects of weak to moderate disorder on the T=0 Mott metal-insulator transition in two dimensions. Our model calculations demonstrate that the electronic states close to the Fermi energy become more spatially homogeneous in the critical region. Remarkably, the higher energy states show the opposite behavior: they display enhanced spatial inhomogeneity precisely in the close vicinity to the Mott transition. We suggest that such energy-resolved disorder screening is a generic property of disordered Mott systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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