Quantum Dots in a Strong Magnetic Field. Quasi-classical Consideration

Details Quantum Dots in a Strong Magnetic Field. Quasi-classical Consideration Quantum Dots in a Strong Magnetic Field. Quasi-classical Consideration

2002-06-11

arxiv.org/abs/cond-mat/0206169v1

In book "Nano-Physics & Bio-Electronics: A New Odyssey", ed. by T. Chakraborty, F. Peeters and U. Sivan, ELSEVIER, 2002, p. 23

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 5 figures, RevTeX4

Scientific paper

The electron motion in rather strong magnetic fields (when only the lowest Landau level is populated) is considered. In this case the electron kinetic energy is frozen out and the electrons are guided by slowly varied potential. Using the adiabatic procedure and expansion in magnetic length series the approximate description is developed. In zero order this approximation leads to the classical equations of motion describing the Larmor circle drift in the potential gradient. In the second order the special quantum mechanical description where the electron potential energy plays the role of the total Hamiltonian is constructed. Simple examples of a single and two electrons in the parabolic dot demonstrates that the proposed approximate description gives the main features of the electron system spectrum and the collective phenomena.

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