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arXiv 1303.0641cond-mat.mes-hallquant-ph
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规范场II存在下二维周期结构中的Landau-Zener隧穿:电击穿

Landau-Zener tunneling in 2D periodic structures in the presence of a gauge field II: Electric breakdown

D. N. Maksimov, I. Yu. Chesnokov, D. V. Makarov, A. R. Kolovsky

摘要:

本文在单带近似下分析了霍尔组态下正方晶格中量子粒子的动力学。对于消失的规范(磁场)场,这种动力学由带间朗道-齐纳隧穿定义,这是造成电击穿现象的原因。我们证明,在存在规范场的情况下,这种现象是不存在的,至少,在它的常识。相反,朗道-齐纳隧穿导致有限电流的出现,该有限电流在与电势(电)场的矢量正交的方向上流动。

英文摘要:

We analyze dynamics of a quantum particle in a square lattice in the Hall configuration beyond the single-band approximation. For vanishing gauge (magnetic) field this dynamics is defined by the inter-band Landau-Zener tunneling, which is responsible for the phenomenon known as the electric breakdown. We show that in the presence of a gauge field this phenomenon is absent, at least, in its common sense. Instead, the Landau-Zener tunneling leads to appearance of a finite current which flows in the direction orthogonal to the vector of a potential (electric) field.

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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