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arXiv · 1410.8647

Asymmetric quantum transport in a double-stranded Kronig-Penney model

Taksu Cheon·Sergey S. Poghosyan
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Abstract

We introduce a double-stranded Kronig-Penney model and analyze its transport properties. The asymmetric fluxes between two strands with suddenly alternating localization patterns are found as the energy is varied. The zero-size limit of the internal lines connecting two strands is examined using quantum graph vertices with four edges. We also consider a two-dimensional Kronig-Penney lattice with two types of alternating layers with $\delta$ and $\delta'$ connections, and show that the existence of energy bands in which the quantum flux can flow only in selected directions.

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Taksu Cheon, Sergey S. Poghosyan. 2014-10-31. Asymmetric quantum transport in a double-stranded Kronig-Penney model. https://doi.org/10.7566/jpsj.84.064006

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