Magnetic field controlled electron transport in a thin cylinder

Details Magnetic field controlled electron transport in a thin cylinder Magnetic field controlled electron transport in a thin cylinder

2009-04-13

arxiv.org/abs/0904.1940v1

Physica E: Low-dimensional Systems and Nanostructures, Volume 41, Issue 8, August 2009, Pages 1439-1444

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 7 figures

Scientific paper

10.1016/j.physe.2009.04.013

We explore electron transport in a thin cylinder, attached to two semi-infinite one-dimensional metallic electrodes, in the presence of both longitudinal and transverse magnetic fluxes. A simple tight-binding model is used to describe the system, where all the calculations are performed in the Green's function formalism. Quite surprisingly it is observed that, typical current amplitude oscillates as a function of the transverse magnetic flux, associated with conductance-energy characteristics, showing $N\phi_0$ flux-quantum periodicity, where $N$ and $\phi_0$ $(=ch/e)$ correspond to the system size and elementary flux-quantum respectively. The analysis might be helpful in fabricating mesoscopic switching devices, where a particular response can be delayed by tuning the system size $N$.

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