Transport Properties of Strongly Correlated Electrons in Quantum Dots Using a Simple Circuit Model
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedade Brasileira de Física
2006
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| _version_ | 1876453694463016960 |
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| author | G. B. Martins |
| author_facet | G. B. Martins |
| contents | Transport Properties of Strongly Correlated Electrons in Quantum Dots Using a Simple Circuit Model G. B. Martins C. A. Büsser K. A. Al-Hassanieh A. Moreo E. Dagotto E. V. Anda Física, Astronomía y Matemáticas Kondo effect Nanoscopic systems Correlated electrons Numerical calculations are shown to reproduce the main results of recent experiments involving nonlocal spincontrol in nanostructures (N. J. Craig et al., Science 304, 565 (2004)). In particular, the splitting of the zerobias-peak discovered experimentally is clearly observed in our studies. To understand these results, a simplecircuit model is introduced and shown to provide a good qualitative description of the experiments. The mainidea is that the splitting originates in a Fano anti-resonance, which is caused by having one quantum dot sideconnectedin relation to the currents path. This scenario provides an explanation of Craig et al.s results that isalternative to the RKKY proposal, which is here also addressed. 2006 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46436505 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3B Vol.36 |
| format | Artículo científico |
| id | redalyc_46436505 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Transport Properties of Strongly Correlated Electrons in Quantum Dots Using a Simple Circuit Model G. B. Martins Física, Astronomía y Matemáticas Kondo effect Nanoscopic systems Correlated electrons Transport Properties of Strongly Correlated Electrons in Quantum Dots Using a Simple Circuit Model G. B. Martins C. A. Büsser K. A. Al-Hassanieh A. Moreo E. Dagotto E. V. Anda Física, Astronomía y Matemáticas Kondo effect Nanoscopic systems Correlated electrons Numerical calculations are shown to reproduce the main results of recent experiments involving nonlocal spincontrol in nanostructures (N. J. Craig et al., Science 304, 565 (2004)). In particular, the splitting of the zerobias-peak discovered experimentally is clearly observed in our studies. To understand these results, a simplecircuit model is introduced and shown to provide a good qualitative description of the experiments. The mainidea is that the splitting originates in a Fano anti-resonance, which is caused by having one quantum dot sideconnectedin relation to the currents path. This scenario provides an explanation of Craig et al.s results that isalternative to the RKKY proposal, which is here also addressed. 2006 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46436505 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3B Vol.36 |
| title | Transport Properties of Strongly Correlated Electrons in Quantum Dots Using a Simple Circuit Model |
| topic | Física, Astronomía y Matemáticas Kondo effect Nanoscopic systems Correlated electrons |
| url | https://www.redalyc.org/articulo.oa?id=46436505 |