Kondo and mixed-valence regimes in multilevel quantum dots
Journal Article
·
· Physical Review B
We investigate the dependence of the ground state of a multilevel quantum dot on the coupling to an external fermionic system and on the interactions in the dot. As the coupling to the external system increases, the rearrangement of the effective energy levels in the dot signals the transition from the Kondo regime to a mixed-valence (MV) regime. The MV regime in a two-level dot is characterized by an intrinsic mixing of the levels in the dot, resulting in nonperturbative subtunneling and supertunneling phenomena that strongly influence the Kondo effect.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40205487
- Journal Information:
- Physical Review B, Journal Name: Physical Review B Journal Issue: 16 Vol. 63; ISSN 0163-1829
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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