Tunneling through Quantum Dots with Discrete Symmetries

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We describe in this short review the influence of discrete symmetries in complex quantum dots on the Kondo co-tunneling through these nano-objects. These discrete symmetries stem from the geometrical structure of the tunneling devices (e.g spatial symmetry of multivalley quantum dot in a tunneling contact with leads). They affect the dynamical symmetry of spin multiplets characterizing the ground state and excitations in quantum dots with definite electron number occupation. The influence of external electric and magnetic fields on these symmetries is examined, and analogies with the physics of quantum tunneling through molecular complexes are discussed.
Short review (22 pages) prepared for "Encyclopedia of Complexity" (Springer, 2008)

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Strongly Correlated Electrons, Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/146317

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0801.3095
 http://arxiv.org/abs/0801.3095

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arXiv