The Aharonov-Bohm Interference and Beating in Single-Walled Carbon Nanotube Interferometers

Details The Aharonov-Bohm Interference and Beating in Single-Walled Carbon Nanotube Interferometers The Aharonov-Bohm Interference and Beating in Single-Walled Carbon Nanotube Interferometers

2004-07-08

arxiv.org/abs/cond-mat/0407185v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Physical Review Letters, in press

Scientific paper

10.1103/PhysRevLett.93.216803

Relatively low magnetic fields applied parallel to the axis of a chiral single-walled carbon nanotube are found causing large modulations to the p-channel or valence band conductance of the nanotube in the Fabry-Perot interference regime. Beating in the Aharonov-Bohm type of interference between two field-induced non-degenerate sub-bands of spiraling electrons is responsible for the observed modulation with a pseudo period much smaller than that needed to reach the flux quantum F0 = h/e through the nanotube cross-section. We show that single-walled nanotubes represent the smallest cylinders exhibiting the Aharonov-Bohm effect with rich interference and beating phenomena arising from well-defined molecular orbitals reflective of the nanotube chirality.

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