The Use of Quantum Dots as Highly Sensitive Switchs Based on Singlet-Triplet Transition and Symmetry Constraint
Y. M. Liu, G. M. Huang, C. G. Bao
Abstract
Based on symmetry constraint that leads to the appearance of nodes in the wave functions of 3-electron systems at regular triangle configurations, it was found that, if the parameters of confinement are skillfully given and if a magnetic field is tuned around the critical point of the singlet-triplet transition, a 2-electron quantum dot can be used as a highly sensitive switch for single-electron transport.
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