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Persistent currents due to point obstacles

机译:由于点障碍而产生的持续电流

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摘要

We discuss properties of the two-dimensional Landau Hamiltonian perturbed by 4 family of identical delta potentials arranged equidistantly along a closed loop. It is demonstrated that for the loop size exceeding the effective size of the point obstacles and. the cyclotronic radius such a system exhibits persistent currents at the bottom of the spectrum. We also show that the effect is sensitive to a small disorder. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 19]
机译:我们讨论了二维Landau哈密顿量的性质,该性质受到沿闭合环等距排列的4个相同的δ势族的扰动。证明了对于环路的大小超过了点障碍物的有效大小。回旋电子半径这样的系统在频谱的底部显示出持续的电流。我们还显示该效果对小疾病敏感。 (C)2002 Elsevier Science B.V.保留所有权利。 [参考:19]

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