Orbital caloritronic transport in strongly interacting quantum dots
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 orb...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2014-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/16/1/015003 |
| _version_ | 1797751565707116544 |
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| author | Jong Soo Lim Rosa López David Sánchez |
| author_facet | Jong Soo Lim Rosa López David Sánchez |
| author_sort | Jong Soo Lim |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-12T16:50:22Z |
| format | Article |
| id | doaj.art-34cc3b9c45594a1db7a9e09c50245c5d |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:50:22Z |
| publishDate | 2014-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-34cc3b9c45594a1db7a9e09c50245c5d2023-08-08T11:20:53ZengIOP PublishingNew Journal of Physics1367-26302014-01-0116101500310.1088/1367-2630/16/1/015003Orbital caloritronic transport in strongly interacting quantum dotsJong Soo Lim0Rosa López1David Sánchez2https://orcid.org/0000-0002-2549-7071Institut de Física Interdisciplinària i Sistemes Complexos IFISC (UIB-CSIC) , E-07122 Palma de Mallorca, Spain; School of Physics, Korea Institute for Advanced Study , Seoul 130-722, KoreaInstitut de Física Interdisciplinària i Sistemes Complexos IFISC (UIB-CSIC) , E-07122 Palma de Mallorca, Spain; Departament de Física, Universitat de les Illes Balears , E-07122 Palma de Mallorca, SpainInstitut de Física Interdisciplinària i Sistemes Complexos IFISC (UIB-CSIC) , E-07122 Palma de Mallorca, Spain; Departament de Física, Universitat de les Illes Balears , E-07122 Palma de Mallorca, SpainWe 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.https://doi.org/10.1088/1367-2630/16/1/015003 |
| spellingShingle | Jong Soo Lim Rosa López David Sánchez Orbital caloritronic transport in strongly interacting quantum dots New Journal of Physics |
| title | Orbital caloritronic transport in strongly interacting quantum dots |
| title_full | Orbital caloritronic transport in strongly interacting quantum dots |
| title_fullStr | Orbital caloritronic transport in strongly interacting quantum dots |
| title_full_unstemmed | Orbital caloritronic transport in strongly interacting quantum dots |
| title_short | Orbital caloritronic transport in strongly interacting quantum dots |
| title_sort | orbital caloritronic transport in strongly interacting quantum dots |
| url | https://doi.org/10.1088/1367-2630/16/1/015003 |
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