Quantum Transport in a Biphenyl Molecule: Effects of Magnetic Flux

Details Quantum Transport in a Biphenyl Molecule: Effects of Magnetic Flux Quantum Transport in a Biphenyl Molecule: Effects of Magnetic Flux

2009-08-20

arxiv.org/abs/0908.2884v1

Journal of Computational and Theoretical Nanoscience, Volume 6, Number 7, July 2009, pp. 1561-1565(5)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 5 figures

Scientific paper

10.1166/jctn.2009.1212

Electron transport properties of a biphenyl molecule are studied based on the Green's function formalism. The molecule is sandwiched between two metallic electrodes, where each benzene ring is threaded by a magnetic flux $\phi$. The results are focused on the effects of the molecule to electrode coupling strength and the magnetic flux $\phi$. Our numerical study shows that, for a fixed molecular coupling, the current amplitude across the bridge can be {\em regulated} significantly just by tuning the flux $\phi$. This aspect may be utilized in designing nano-scale electronic circuits.

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