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Level Fluctuations and Many-Body Effects in Disorder-Free Quantum Dots

Min-Chul Cha·S. -R. Eric Yang
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Abstract

We have investigated whether many-body effects can induce significant level fluctuations in a disorder-free quantum dot. The closed energy shell structures and relaxation of the Hartree-Fock potentials are found to play a significant role. The level degeneracy consistent with the rotational symmetry of the confining potential determines the structure of the energy shells. A closed shell state of a dot can give rise to large fluctuations. When a strong magnetic field is present the shell structure is absent and fluctuations are significantly reduced.

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Min-Chul Cha, S. -R. Eric Yang. 1999-08-04. Level Fluctuations and Many-Body Effects in Disorder-Free Quantum Dots. https://doi.org/10.1103/physrevb.61.1720

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