Please use this identifier to cite or link to this item: https://doi.org/10.1038/srep04566
Title: Wave-packet rectification in nonlinear electronic systems: A tunable Aharonov-Bohm diode
Authors: Li, Y.
Zhou, J.
Marchesoni, F.
Li, B. 
Issue Date: 2-Apr-2014
Citation: Li, Y., Zhou, J., Marchesoni, F., Li, B. (2014-04-02). Wave-packet rectification in nonlinear electronic systems: A tunable Aharonov-Bohm diode. Scientific Reports 4 : -. ScholarBank@NUS Repository. https://doi.org/10.1038/srep04566
Abstract: Rectification of electron wave-packets propagating along a quasi-one dimensional chain is commonly achieved via the simultaneous action of nonlinearity and longitudinal asymmetry, both confined to a limited portion of the chain termed wave diode. However, it is conceivable that, in the presence of an external magnetic field, spatial asymmetry perpendicular to the direction of propagation suffices to ensure rectification. This is the case of a nonlinear ring-shaped lattice with different upper and lower halves (diode), which is attached to two elastic chains (leads). The resulting device is mirror symmetric with respect to the ring vertical axis, but mirror asymmetric with respect to the chain direction. Wave propagation along the two diode paths can be modeled for simplicity by a discrete Schrödinger equation with cubic nonlinearities. Numerical simulations demonstrate that, thanks to the Aharonov-Bohm effect, such a diode can be operated by tuning the magnetic flux across the ring.
Source Title: Scientific Reports
URI: http://scholarbank.nus.edu.sg/handle/10635/98575
ISSN: 20452322
DOI: 10.1038/srep04566
Appears in Collections:Staff Publications

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