Non-adiabatic Current Excitation in Quantum Rings

Details Non-adiabatic Current Excitation in Quantum Rings Non-adiabatic Current Excitation in Quantum Rings

2003-09-29

arxiv.org/abs/cond-mat/0309661v1

Physica Scripta T114, 41 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

LaTeX, 5 pages with 6 embedded postscript figures, submitted to 20th Nordic Semiconductor Meeting, Tampere (2003)

Scientific paper

We investigate the difference in the response of a one-dimensional
semiconductor quantum ring and a finite-width ring to a strong and short-lived
time-dependent perturbation in the THz regime. In both cases the persistent
current is modified through a nonadiabatic change of the many-electron states
of the system, but by different mechanisms in each case.

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