Coherence in the Two Kondo Impurity Problem
| dc.creator | Zhu, Lijun | |
| dc.creator | Varma, C. M. | |
| dc.date | 2006-07-17 | |
| dc.date | 2007-01-18 | |
| dc.date.accessioned | 2026-07-07T07:41:23Z | |
| dc.date.available | 2026-07-07T07:41:23Z | |
| dc.description | We show through a perturbative and an exact calculation using Wilson's renormalization methods that in the problem of two interacting Kondo impurities, on-site potential scattering generates a quantum-tunneling between the two impurities through a marginally relevant operator. The magnitude of this tunneling $V_{12}$ depends on the spin-correlation between the two impurities. For exchange interactions between the moments comparable to the Kondo energy $T_K$, $V_{12}$ is typically much larger than $T_K$. This implies that the heavy-fermion mass in this interesting range is determined by $V_{12}$ rather than $T_K$. The importance of these results for experiments in coupled Kondo dots is also pointed out. | |
| dc.description | 4 pages, 5 figures. Revised version | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0607426 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0607426 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/122088 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Coherence in the Two Kondo Impurity Problem | |
| dc.type | text |