94 citations · 194 across the 6 of their papers we have counts for
6 papers
Lanczos transformation for quantum impurity problems in d-dimensional lattices: application to graphene nanoribbons
C. A. Busser, G. B. Martins, A. E. Feiguin
We present a completely unbiased and controlled numerical method to solve quantum impurity problems in d-dimensional lattices. This approach is based on a canonical transformation,…
Reducing entanglement with symmetries: application to persistent currents in impurity problems
A. E. Feiguin, C. A. Busser
We show how canonical transformations can map problems with impurities coupled to non-interacting rings onto a similar problem with open boundary conditions. The consequent reducti…
Kondo regime in triangular arrangements of quantum dots: Molecular orbitals, interference and contact effects
E. Vernek, C. A. Busser, G. B. Martins +3
Transport properties of an interacting triple quantum dot system coupled to three leads in a triangular geometry has been studied in the Kondo regime. Applying mean-field finite-U…
Transport properties of strongly correlated electrons in quantum dots using a simple circuit model
G. B. Martins, C. A. Busser, K. A. Al-Hassanieh +3
Numerical calculations are shown to reproduce the main results of recent experiments involving nonlocal spin control in nanostructures (N. J. Craig et al., Science 304, 565 (2004))…
Kondo Effect and Persistent Currents in a Mesoscopic Ring: Numerically Exact Results
E. V. Anda, C. Busser, G. Chiappe +1
We study the persistent current circulating along a mesoscopic ring with a dot side-coupled to it when threaded by a magnetic field. A cluster including the dot and its vicinity is…
Transport in Coupled Quantum Dots: Kondo Effect Versus Anti-Ferromagnetic Correlation
C. A. Büsser, E. V. Anda, A. L Lima +2
The interplay between the Kondo effect and the inter-dot magnetic interaction in a coupled-dot system is studied. An exact result for the transport properties at zero temperature i…