Probing the Shape of Quantum Dots with Magnetic Fields

Details Probing the Shape of Quantum Dots with Magnetic Fields Probing the Shape of Quantum Dots with Magnetic Fields

2004-02-13

arxiv.org/abs/cond-mat/0402362v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

11 pages, 4 figures

Scientific paper

10.1103/PhysRevB.69.155312

A tool for the identification of the shape of quantum dots is developed. By preparing a two-electron quantum dot, the response of the low-lying excited states to a homogeneous magnetic field, i.e. their spin and parity oscillations, is studied for a large variety of dot shapes. For any geometric configuration of the confinement we encounter characteristic spin singlet - triplet crossovers. The magnetization is shown to be a complementary tool for probing the shape of the dot.

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