95 citations · 591 across the 30 of their papers we have counts for
4 papers · 2 filters
Kondo Regime of a Quantum Dot Molecule: A Finite-U Slave-Boson Approach
E. Vernek, N. Sandler, S. E. Ulloa +1
We study the electronic transport in a double quantum dot structure connected to leads in the Kondo regime for both series and parallel arrangements. By applying a finite-U slave b…
Spin polarized photocurrent from quantum dots
J. M. Villas-Boas, Sergio E. Ulloa, A. O. Govorov
In this paper we show that it is possible to switch the spin polarization of the photocurrent signal obtained from a single self-assembled quantum dot photodiode under the effect o…
Spin relaxation rates in quasi-one-dimensional coupled quantum dots
C. L. Romano, P. I. Tamborenea, S. E. Ulloa
We study theoretically the spin relaxation rate in quasi-one-dimensional coupled double semiconductor quantum dots. We consider InSb and GaAs-based systems in the presence of the R…
Polarization and Aharonov-Bohm oscillations in quantum-ring magnetoexcitons
Luis G. Dias da Silva, Sergio E. Ulloa, Tigran V. Shahbazyan
We study interaction and radial polarization effects on the the absorption spectrum of neutral bound magnetoexcitons confined in quantum-ring structures. We show that the size and…