Two-stage three-channel Kondo physics for an FePc molecule on the Au(1 1 1) surface

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We study an impurity Anderson model to describe an iron phthalocyanine (FePc) molecule on Au(1 1 1), motivated by previous results of scanning tunneling spectroscopy (STS) and theoretical studies. The model hybridizes a spin doublet consisting in one hole at the 3dz2 orbital of iron and two degenera...

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Autor principal: Fernández, J.
Otros Autores: Roura-Bas, P., Camjayi, A., Aligia, Armando Angel
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: Institute of Physics Publishing 2018
Acceso en línea:Registro en Scopus
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100 1 |a Fernández, J. 
245 1 0 |a Two-stage three-channel Kondo physics for an FePc molecule on the Au(1 1 1) surface 
260 |b Institute of Physics Publishing  |c 2018 
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506 |2 openaire  |e Política editorial 
520 3 |a We study an impurity Anderson model to describe an iron phthalocyanine (FePc) molecule on Au(1 1 1), motivated by previous results of scanning tunneling spectroscopy (STS) and theoretical studies. The model hybridizes a spin doublet consisting in one hole at the 3dz2 orbital of iron and two degenerate doublets corresponding to one hole either in the 3dxz or in the 3dyz orbital (called π orbitals) with two degenerate Hund-rule triplets with one hole in the 3dz orbital and another one in a π orbital. We solve the model using a slave-boson mean-field approximation (SBMFA). For reasonable parameters we can describe very well the observed STS spectrum between sample bias -60 mV to 20 mV. For these parameters the Kondo effect takes place in two stages, with different energy scales TzK > T K corresponding to the Kondo temperatures related with the hopping of the z2 and π orbitals respectively. There is a strong interference between the different channels and the Kondo temperatures, particularly the lowest one is strongly reduced compared with the value in the absence of the competing channel. © 2018 Institute of Physics Publishing. All rights reserved.  |l eng 
536 |a Detalles de la financiación: Agencia Nacional de Promoción Científica y Tecnológica 
536 |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas, PICT 2013-1045 
536 |a Detalles de la financiación: We acknowledge financial support provided by PIP 112-201501-00506 of CONICET and PICT 2013-1045 of the ANPCyT. 
593 |a Centro Atómico Bariloche and Instituto Balseiro, Comisión Nacional de Energia Atómica, CONICET Bariloche, 8400, Argentina 
593 |a Departamento de Fisica, FCEyN, Universidad de Buenos Aires, IFIBA, Pabellón i, Ciudad Universitaria, CABA, 1428, Argentina 
690 1 0 |a IRON 
690 1 0 |a MOLECULES 
690 1 0 |a SCANNING TUNNELING MICROSCOPY 
690 1 0 |a ANDERSON MODELS 
690 1 0 |a IRON PHTHALOCYANINES 
690 1 0 |a KONDO TEMPERATURES 
690 1 0 |a MEAN FIELD APPROXIMATION 
690 1 0 |a SCANNING TUNNELING SPECTROSCOPY 
690 1 0 |a STRONG INTERFERENCE 
690 1 0 |a THEORETICAL STUDY 
690 1 0 |a THREE CHANNEL 
690 1 0 |a ORBITS 
700 1 |a Roura-Bas, P. 
700 1 |a Camjayi, A. 
700 1 |a Aligia, Armando Angel 
773 0 |d Institute of Physics Publishing, 2018  |g v. 30  |k n. 37  |p J Phys Condens Matter  |x 09538984  |w (AR-BaUEN)CENRE-311  |t Journal of Physics Condensed Matter 
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