Valley current filtering and reversal by parallel side contacted armchair nanotubes

Abstract

The intertube conductance $G$ of the parallel side contacted armchair nanotubes is calculated by Landauer's formula as a function of the Fermi level $E$. When the intertube difference in the dope strength is large enough, a resonant peak dominant over the others appears in the $E$-$G$ curve. The overlap length and the interlayer configuration do not influence the resonant energy. The intervalley transmission at the resonant peak works as a reverser and a filter of the valley current.

version 4. In part just above Table V in version 3, there is a typo, where $|q_{\mathrm{r}}|$ is replaced by $E^{\prime }/E$ by mistake. (correct) The small nonzero $I_{-\sigma ,\sigma }$ being inversely proportional to ${\tilde{E}}^2$ originates from the slight difference of $|q_{\mathrm{r}}|$ from 1 as is explained by Appendix D

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Cited by in corpus (1)

• Origins of Valley Current Reversal in Partially Overlapped Graphene Layers