Method to study highly correlated nanostructures: The logarithmic-discretization embedded-cluster approximation

E. V. Anda,1 G. Chiappe,2,3 C. A. Büsser,4,5 M. A. Davidovich,1 G. B. Martins,5,* F. Heidrich-Meisner,6,7 and E. Dagotto7 1Departamento de Física, Pontifícia Universidade Católica do Rio de Janeiro, 22453-900, Brazil 2Departamento de Física Aplicada, Universidad de Alicante, San Vicente del Raspeig, Alicante 03690, Spain 3Departamento de Física J. J. Giambiagi, Facultad de Ciencias Exactas, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina 4Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA 5Department of Physics, Oakland University, Rochester, Michigan 48309, USA 6Institut für Theoretische Physik C, RWTH Aachen University, 52056 Aachen, Germany and JARA-Fundamentals of Future Information Technology, Germany 7Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA and Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA Received 13 May 2008; published 15 August 2008