Perturbative theory of the non-equilibrium singlet-triplet transition
| Autor: | Horvath, B., Lazarovits, B., Zarand, G. |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Journal of Physics: Conference Series 200 (2010) 012063 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1742-6596/200/1/012063 |
| Popis: | We study equilibrium and non-equilibrium properties of a two-level quantum dot close to the singlet-triplet transition. We treat the on-site Coulomb interaction and Hund's rule coupling perturbatively within the Keldysh formalism. We compute the spectral functions and the differential conductance of the dot. For moderate interactions our perturbative approach captures the Kondo effect and many of the experimentally observed properties. Comment: Contribution to the proceedings of ICM2009 (International Conference on Magnetism) |
| Databáze: | arXiv |
| Externí odkaz: |
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