Abstract
We theoretically study the Kondo effect in quantum dots with two orbitals and spin 1/2, using the numerical renormalization group method. The Kondo temperature TK and conductance are evaluated, changing the energy difference Δ between the orbitals. TK is maximal around Δ = 0 and decreases with increasing Δ. The conductance shows an analogous behavior at a finite temperature, in accordance with the experimental results. We observe a universal curve for the conductance as a function of T/T K, irrespectively of Δ, but not for the partial conductance through one of the orbitals.
| Original language | English |
|---|---|
| Title of host publication | LOW TEMPERATURE PHYSICS |
| Subtitle of host publication | 24th International Conference on Low Temperature Physics - LT24 |
| Pages | 1380-1381 |
| Number of pages | 2 |
| DOIs | |
| Publication status | Published - 2006 Dec 1 |
| Event | LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States Duration: 2006 Aug 10 → 2006 Oct 17 |
Publication series
| Name | AIP Conference Proceedings |
|---|---|
| Volume | 850 |
| ISSN (Print) | 0094-243X |
| ISSN (Electronic) | 1551-7616 |
Other
| Other | LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 |
|---|---|
| Country | United States |
| City | Orlando, FL |
| Period | 06/8/10 → 06/10/17 |
Keywords
- Kondo effect
- NRG
- Numerical renormalization group
- Quantum dot
- SU(4)Kondo effect
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Cite this
Sato, T., & Eto, M. (2006). Numerical studies of Kondo effect in multilevel quantum dots. In LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 (pp. 1380-1381). (AIP Conference Proceedings; Vol. 850). https://doi.org/10.1063/1.2355220