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 | AIP Conference Proceedings |
| Pages | 1380-1381 |
| Number of pages | 2 |
| Volume | 850 |
| DOIs | |
| Publication status | Published - 2006 |
| Event | LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States Duration: 2006 Aug 10 → 2006 Oct 17 |
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 |
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Keywords
- Kondo effect
- NRG
- Numerical renormalization group
- Quantum dot
- SU(4)Kondo effect
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Numerical studies of Kondo effect in multilevel quantum dots. / Sato, Tomoya; Eto, Mikio.
AIP Conference Proceedings. Vol. 850 2006. p. 1380-1381.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Numerical studies of Kondo effect in multilevel quantum dots
AU - Sato, Tomoya
AU - Eto, Mikio
PY - 2006
Y1 - 2006
N2 - 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.
AB - 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.
KW - Kondo effect
KW - NRG
KW - Numerical renormalization group
KW - Quantum dot
KW - SU(4)Kondo effect
UR - http://www.scopus.com/inward/record.url?scp=33947528432&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33947528432&partnerID=8YFLogxK
U2 - 10.1063/1.2355220
DO - 10.1063/1.2355220
M3 - Conference contribution
AN - SCOPUS:33947528432
SN - 0735403473
SN - 9780735403475
VL - 850
SP - 1380
EP - 1381
BT - AIP Conference Proceedings
ER -