Artículo
Chiappe, G.; Louis, E. "Kondo effect of an adsorbed Cobalt Phthalocyanine (CoPc) molecule: The role of quantum interference" (2006) Physical Review Letters. 97(7)
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Abstract:
It has been shown that by distorting a CoPc molecule adsorbed on a Au(111) surface a Kondo effect is induced with a temperature higher than 200 K. We examine a model in which an atom with strong Coulomb repulsion (Co) is surrounded by four atoms on a square (molecule lobes), with two atoms above and below it representing the apex of the STM tip and an atom on the gold surface (all with a single atomic orbital). The Hamiltonian is solved exactly for the isolated cluster, and, after connecting the leads, the conductance is calculated by standard techniques. Quantum interference prevents the existence of the Kondo effect when the orbitals on the square do not interact (undistorted molecule); the Kondo resonance shows up after switching on that interaction. The weight of the Kondo resonance is controlled by the interplay of couplings to the STM tip and the gold surface and between the molecule lobes. © 2006 The American Physical Society.
Registro:
| Documento: | Artículo |
| Título: | Kondo effect of an adsorbed Cobalt Phthalocyanine (CoPc) molecule: The role of quantum interference |
| Autor: | Chiappe, G.; Louis, E. |
| Filiación: | Departamento de Física Aplicada, Unidad Asociada del Consejo Superior de Investigaciones Científicas, Universidad de Alicante, San Vicente del Raspeig, Alicante 03690, Spain Departamento de Física J.J. Giambiagi, Facultad de Ciencias Exactas, Ciudad Universitaria, 1428 Buenos Aires, Argentina |
| Palabras clave: | Atomic physics; Cobalt compounds; Electric conductance; Gold compounds; Hamiltonians; Molecular structure; Cobalt Phthalocyanine; Isolated cluster; Kondo effect; Molecule lobes; Quantum interference phenomena |
| Año: | 2006 |
| Volumen: | 97 |
| Número: | 7 |
| DOI: | http://dx.doi.org/10.1103/PhysRevLett.97.076806 |
| Título revista: | Physical Review Letters |
| Título revista abreviado: | Phys Rev Lett |
| ISSN: | 00319007 |
| CODEN: | PRLTA |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v97_n7_p_Chiappe |
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Citas:
---------- APA ----------
Chiappe, G. & Louis, E. (2006) . Kondo effect of an adsorbed Cobalt Phthalocyanine (CoPc) molecule: The role of quantum interference. Physical Review Letters, 97(7).http://dx.doi.org/10.1103/PhysRevLett.97.076806
---------- CHICAGO ----------
Chiappe, G., Louis, E. "Kondo effect of an adsorbed Cobalt Phthalocyanine (CoPc) molecule: The role of quantum interference" . Physical Review Letters 97, no. 7 (2006).http://dx.doi.org/10.1103/PhysRevLett.97.076806
---------- MLA ----------
Chiappe, G., Louis, E. "Kondo effect of an adsorbed Cobalt Phthalocyanine (CoPc) molecule: The role of quantum interference" . Physical Review Letters, vol. 97, no. 7, 2006.http://dx.doi.org/10.1103/PhysRevLett.97.076806
---------- VANCOUVER ----------
Chiappe, G., Louis, E. Kondo effect of an adsorbed Cobalt Phthalocyanine (CoPc) molecule: The role of quantum interference. Phys Rev Lett. 2006;97(7).http://dx.doi.org/10.1103/PhysRevLett.97.076806
