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Magnetic properties of interacting disordered electron systems in two dimensions

机译:二维相互作用无序电子系统的磁性

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摘要

We compute the magnetic susceptibilities of interacting electrons in the presence of disorder on a two-dimensional square lattice by means of quantum Monte Carlo simulations. Clear evidence is found that at sufficiently low temperatures disorder can lead to an enhancement of the ferromagnetic susceptibility. We show that it is not related to the transition from a metal to an Anderson insulator in two dimensions, but is a rather general low-temperature property of interacting, disordered electronic systems.
机译:通过量子蒙特卡洛模拟,我们计算了在二维方格上无序存在的情况下相互作用电子的磁化率。明确的证据表明,在足够低的温度下,杂乱会导致铁磁敏感性的增强。我们证明它与二维从金属到安德森绝缘子的转变无关,而是与相互作用的,无序的电子系统相当普遍的低温特性。

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