L. Dias da Silva et al. Submitted

1
Materials Research Network Collaborative
Research Decoherence, Correlations and Spin
Effects on Nanostructured Materials. NSF-DMR
07010581 Nancy Sandler1, Sergio E. Ulloa1, Kevin
Ingersent2, and George Martins31Ohio Univ.,
2Univ. of Florida-Gainsville, 3Oakland Univ.
When two quantum dots are connected in parallel
to external leads, the conductance through the
system at different temperatures is affected by
the proximity to a quantum phase transition. The
transition separates a magnetic local moment
phase from the non-magnetic exotic Kondo phase.
Conductance as a function of applied voltage to
one of the dots for various temperatures.
L. Dias da Silva et al. Submitted
2
Materials Research Network Collaborative
Research Decoherence, Correlations and Spin
Effects on Nanostructured Materials. NSF-DMR
07010581 Nancy Sandler1, Sergio E. Ulloa1, Kevin
Ingersent2, and George Martins31Ohio Univ.,
2Univ. of Florida-Gainsville, 3Oakland Univ.
Education The mini-workshop on Numerical
techniques in many-body systems that took place
in OU, brought together the US members of this
collaboration in June 2007.
Luis Dias da Silva during his exposition on NRG
methods.
The workshop was organized by travelling
postdoc Carlos Büsser who talked about ECA
methods.
Profs. Ingersent, Martins, Sandler and Ulloa were
joined by postdoctoral researchers Luis Dias da
Silva and Carlos Büsser during 3 days of
presentations and intensive discussions.