Fano-Rashba effect and enhancement of figure of merit and violation of Wiedemann-Franz law
In the present article, we study the spin-dependent thermoelectric properties of a quantum dot connected to two ferromagnetic contacts. We obtain results for the conductance, thermopower, thermal conductance, Lorentz ratio and figure of merit. The transmission probability shows antiresonances as a f...
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| Formato: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Recursos: | Universidad de Castilla-La Mancha |
| Repositorio: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/47435 |
| Acesso em linha: | http://dx.doi.org/10.1016/j.physe.2019.113618 https://hdl.handle.net/10578/47435 |
| Access Level: | acceso abierto |
| Palavra-chave: | Fano-Rashba effect Wiedemann-Franz law |
| Resumo: | In the present article, we study the spin-dependent thermoelectric properties of a quantum dot connected to two ferromagnetic contacts. We obtain results for the conductance, thermopower, thermal conductance, Lorentz ratio and figure of merit. The transmission probability shows antiresonances as a function of the energy due to the quantum interference effects. It results in a violation of the Wiedemann-Franz law which produces an improvement of the spin-dependent thermopower and the merit figure of the system. This set up can be used to design new spin-dependent thermoelectric devices with high efficiencies. |
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