Luís da Silva

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Luis G. G. V. Dias da Silva, 2, ∗ Murilo L. Tiago, ∗ Sergio E. Ulloa, Fernando A. Reboredo, and Elbio Dagotto 2 Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 Department of Physics and Astronomy, Nanoscale and(More)
We study the role of impurity scattering on the photoluminescence (PL) emission of polarized magnetoexcitons. We consider systems where both the electron and hole are confined on a ring structure (quantum rings) as well as on a type-II quantum dot. Despite their neutral character, excitons exhibit strong modulation of energy and oscillator strength in the(More)
Submitted for the MAR08 Meeting of The American Physical Society Finite-temperature conductance signatures of a quantum-critical transition in a double quantum-dot device1 NANCY SANDLER, Ohio University, LUIS DIAS DA SILVA, Oak Ridge Natl. Lab. and U. of Tennessee, KEVIN INGERSENT, U. of Florida, SERGIO ULLOA, Ohio University — We present conductance(More)
We study the transmission through a double quantum-dot system in the Kondo regime. An exact expression for the transmission coefficient in terms of fully interacting many-body Green’s functions is obtained. By mapping the system into an effective Anderson impurity model, one can determine the transmission using numerical renormalization-group methods. The(More)
Luis G. G. V. Dias da Silva,1 E. Vernek,2 K. Ingersent,3 N. Sandler,4,5 and S. E. Ulloa4,5 1Instituto de Fı́sica, Universidade de São Paulo, C.P. 66318, 05315-970 São Paulo, SP, Brazil 2Instituto de Fı́sica, Universidade Federal de Uberlândia, Uberlândia, MG 38400–902, Brazil 3Department of Physics, University of Florida, P.O. Box 118440, Gainesville,(More)
Few studies have assessed the effects of tannery effluents intake in mammalian animal models, despite the discharge of tannery effluents into water bodies without treatment are environmental and public health problems in many countries. This study therefore aimed to evaluate the effects of the mice parental generation exposure to tannery effluent on the(More)
The global deployment of personal communications services (PCS) is pushing for more and more network capacity to accommodate an exponentially growing user base. Radio spectrum, the basic resource in radio communications, unfortunately does not follow this growth. Even though the current spectrum usage leaves margins for re-use, it is limited by the current(More)
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