Mesoscopic oscillator in U-shape with giant persistent current

Details Mesoscopic oscillator in U-shape with giant persistent current Mesoscopic oscillator in U-shape with giant persistent current

2008-10-21

arxiv.org/abs/0810.3802v1

Nuovo Cimento B 124 (2009) 293

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 8 figures, submitted to PRB

Scientific paper

10.1393/ncb/i2009-10763-1

A mesoscopic oscillator in U-shape has been proposed and studied. Making use of a magnetic flux together with a potential of confinement, the electron contained in the oscillator has been localized initially and an amount of energy has been thereby stored. Then a sudden cancellation of both the potential and the flux may cause an initial current which initiates a periodic motion of the electron from one end of the U-oscillator to the opposite end, and repeatedly. The period is adjustable. The current associated with the periodic motion can be tuned very strong (say, more than two orders larger than the current of the usual Aharonov-Bohm oscillation). Related theory and numerical results are presented.

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