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Título: | Orbital caloritronic transport in strongly interacting quantum dots |
Autor: | Lim, Jong-Soo CSIC ORCID; López, Rosa CSIC ORCID ; Sánchez, David CSIC ORCID | Fecha de publicación: | ene-2014 | Editor: | Institute of Physics Publishing | Citación: | New Journal of Physics 16: 015003 (2014) | Resumen: | We discuss population imbalances between different orbital states due to applied thermal gradients. This purely thermoelectric effect appears quite generically in nanostructures with a pseudospin (orbital) degree of freedom. We define an orbital Seebeck coefficient that characterizes the induced orbital bias generated across a quantum conductor in response to a temperature difference applied to the attached reservoirs. We analyze a two-terminal strongly interacting quantum dot with two orbital states and find that the orbital thermopower acts as an excellent tool to describe the crossover between SU(4) and SU(2) Kondo states. Our conclusions are reinforced with a detailed comparison to the charge thermopower using exact numerical renormalization group calculations. © 2014 IOP Publishing and Deutsche Physikalische Gesellschaft. | Versión del editor: | http://dx.doi.org/10.1088/1367-2630/16/1/015003 | URI: | http://hdl.handle.net/10261/116360 | DOI: | 10.1088/1367-2630/16/1/015003 | Identificadores: | doi: 10.1088/1367-2630/16/1/015003 issn: 1367-2630 |
Aparece en las colecciones: | (IFISC) Artículos |
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orbital_caloritronic_transport _Lim.pdf | 218,33 kB | Adobe PDF | Visualizar/Abrir |
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