Breakdown of an electric-field driven system: A mapping to a quantum walk
Breakdown of an electric-field driven system: A mapping to a quantum walk
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DOI：
10.1103/physrevlett.94.100602
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发表时间：
2005-03-18
影响因子：
8.6
通讯作者：
Aoki, H
中科院分区：
文献类型：
--
作者：
Oka, T;Konno, N;Aoki, H
通过将Landau-Zener跃迁动力学映射为具有反射边界的半无限一维晶格上的量子行走，研究了强电场驱动下电子系统的量子输运性质.量子干涉诱导的分布局域在基态附近，并且当电场增加时发生离域转变，这描述了原始电子系统中的介电击穿。
Quantum transport properties of electron systems driven by strong electric fields are studied by mapping the Landau-Zener transition dynamics to a quantum walk on a semi-infinite one-dimensional lattice with a reflecting boundary, where the sites correspond to energy levels and the boundary the ground state. Quantum interference induces a distribution localized around the ground state, and a delocalization transition occurs when the electric field is increased, which describes the dielectric breakdown in the original electron system.