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

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This work proposes an approach to study transport properties of highly correlated local structures. The method, dubbed the logarithmic discretization embedded cluster approximation (LDECA), consists of diagonalizing a finite cluster containing the many-body terms of the Hamiltonian and embedding it...

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Autor principal: Anda, Enrique Victoriano
Otros Autores: Chiappe, Guillermo, Büsser, C.A, Davidovich, M.A, Martins, G.B, Heidrich-Meisner, F., Dagotto, E.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2008
Acceso en línea:Registro en Scopus
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100 1 |a Anda, Enrique Victoriano 
245 1 0 |a Method to study highly correlated nanostructures: The logarithmic- discretization embedded-cluster approximation 
260 |c 2008 
270 1 0 |m Martins, G. B.; Department of Physics, Oakland University, Rochester, MI 48309, United States; email: martins@oakland.edu 
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504 |a The reader is reminded that an alternate interpretation of the conductance suppression involves the destructive interference between the two paths available to the conduction electrons: a path that avoids the dots and a path that visits them. This interpretation is completely equivalent to the back-scattering one. These two interpretations will be used interchangeably along the text; Chiappe, G., Fernández-Rossier, J., Louis, E., Anda, E.V., (2005) Phys. Rev. B, 72, p. 245311. , PRBMDO 0163-1829 10.1103/PhysRevB.72.245311 
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506 |2 openaire  |e Política editorial 
520 3 |a This work proposes an approach to study transport properties of highly correlated local structures. The method, dubbed the logarithmic discretization embedded cluster approximation (LDECA), consists of diagonalizing a finite cluster containing the many-body terms of the Hamiltonian and embedding it into the rest of the system, combined with Wilson's idea of a logarithmic discretization of the representation of the Hamiltonian. The physics associated with both one embedded dot and a double-dot side coupled to leads is discussed in detail. In the former case, the results perfectly agree with Bethe ansatz data, while in the latter, the physics obtained is framed in the conceptual background of a two-stage Kondo problem. A many-body formalism provides a solid theoretical foundation to the method. We argue that LDECA is well suited to study complicated problems such as transport through molecules or quantum dot structures with complex ground states. © 2008 The American Physical Society.  |l eng 
593 |a Departamento de Física, Pontifícia Universidade Católica Do Rio de Janeiro, 22453-900, Brazil 
593 |a Departamento de Física Aplicada, Universidad de Alicante, San Vicente del Raspeig, Alicante 03690, Spain 
593 |a Departamento de Física J. J. Giambiagi, Facultad de Ciencias Exactas, Ciudad Universitaria, 1428 Buenos Aires, Argentina 
593 |a Department of Physics and Astronomy, Ohio University, Athens, OH 45701, United States 
593 |a Department of Physics, Oakland University, Rochester, MI 48309, United States 
593 |a Institut für Theoretische Physik C, RWTH Aachen University, 52056 Aachen, Germany 
593 |a JARA-Fundamentals of Future Information Technology, Germany 
593 |a Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States 
593 |a Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996, United States 
700 1 |a Chiappe, Guillermo 
700 1 |a Büsser, C.A. 
700 1 |a Davidovich, M.A. 
700 1 |a Martins, G.B. 
700 1 |a Heidrich-Meisner, F. 
700 1 |a Dagotto, E. 
773 0 |d 2008  |g v. 78  |k n. 8  |p Phys. Rev. B Condens. Matter Mater. Phys.  |x 10980121  |t Physical Review B - Condensed Matter and Materials Physics 
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