Correlation Effects in Side-Coupled Quantum Dots
Strongly Correlated Electrons
2007-06-01 v1
Abstract
Using Wilson's numerical renormalization group (NRG) technique we compute zero-bias conductance and various correlation functions of a double quantum dot (DQD) system. We present different regimes within a phase diagram of the DQD system. By introducing a negative Hubbard U on one of the quantum dots, we simulate the effect of electron-phonon coupling and explore the properties of the coexisting spin and charge Kondo state. In a triple quantum dot (TQD) system a multi-stage Kondo effect appears where localized moments on quantum dots are screened successively at exponentially distinct Kondo temperatures.
Cite
@article{arxiv.0705.4537,
title = {Correlation Effects in Side-Coupled Quantum Dots},
author = {Rok Zitko Janez Bonca},
journal= {arXiv preprint arXiv:0705.4537},
year = {2007}
}