Electronic correlations and real-time dynamics in nanostructures: a computational approach

• Grant number: 10/20804-9
• Support Opportunities: Regular Research Grants
• Start date: April 01, 2011
• End date: September 30, 2013
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Luis Gregório Godoy de Vasconcellos Dias da Silva
• Grantee: Luis Gregório Godoy de Vasconcellos Dias da Silva
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant(s): 13/50220-7 - Magnetic noise due to Kondo impurities in spintronic devices, AP.R

Abstract

This research proposal contemplates computational studies of transport andnon equilibrium effects in strongly correlated systems, with particular emphasison nanostructured materials. Our goal is to investigate electronic correlation sand many-body phenomena and its manifestations on the transport properties of nanostructures such as semiconductor quantum dots and molecular complexes. To this end, we employ state-of-the-art nonperturbative numerical techniques: the numerical renormalization group (NRG) and the density matrix renormalization group (DMRG), as well as their respective time-dependent versions (tNRG andtDMRG). The project calls for que acquisition of a high-performance, 4-node cluster to perform the numerical calculations. (AU)

Scientific publications

(5)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DIAS DA SILVA, LUIS G. G. V.; VERNEK, E.; INGERSENT, K.; SANDLER, N.; ULLOA, S. E.. Spin-polarized conductance in double quantum dots: Interplay of Kondo, Zeeman, and interference effects. Physical Review B, v. 87, n. 20, MAY 29 2013. (10/20804-9)

WONG, ARTURO; LANE, W. BRIAN; DIAS DA SILVA, LUIS G. G. V.; INGERSENT, KEVIN; SANDLER, NANCY; ULLOA, SERGIO E.. Signatures of quantum phase transitions in parallel quantum dots: Crossover from local moment to underscreened spin-1 Kondo physics. Physical Review B, v. 85, n. 11, MAR 22 2012. (10/20804-9)

DIAS DA SILVA, LUIS G. G. V.; ALVAREZ, G.; DAGOTTO, E.. Dynamics of doublon-holon pairs in Hubbard two-leg ladders. Physical Review B, v. 86, n. 19, NOV 5 2012. (10/20804-9)

DIAS DA SILVA, LUIS G. G. V.; VERNEK, E.; INGERSENT, K.; SANDLER, N.; ULLOA, S. E.. Spin-polarized conductance in double quantum dots: Interplay of Kondo, Zeeman, and interference effects. PHYSICAL REVIEW B, v. 87, n. 20, p. 11-pg., 2013-05-29. (10/20804-9)

WONG, ARTURO; LANE, W. BRIAN; DIAS DA SILVA, LUIS G. G. V.; INGERSENT, KEVIN; SANDLER, NANCY; ULLOA, SERGIO E.. Signatures of quantum phase transitions in parallel quantum dots: Crossover from local moment to underscreened spin-1 Kondo physics. PHYSICAL REVIEW B, v. 85, n. 11, p. 6-pg., 2012-03-22. (10/20804-9)