Mechanical effects in quantum dots in magnetic and electric fields

Details Mechanical effects in quantum dots in magnetic and electric fields Mechanical effects in quantum dots in magnetic and electric fields

2001-01-10

arxiv.org/abs/cond-mat/0101133v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, no figures, submitted to Physica E

Scientific paper

The mechanical effects in finite two-dimensional electron systems (quantum dots or droplets) in a strong perpendicular magnetic field are studied. It is shown that, due to asymmetry of the cyclotron dynamics, an additional in-plane electric field causes a ground state transition accompanied by a change in the average total angular momentum of the system, unless the lateral confining potential is exactly parabolic. A precise mechanical experiment is proposed in which a macroscopic angular momentum of a dense matrix of quantum dots could be measured and used to detect and estimate anharmonicity of the confinement.

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