English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/157553
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Large thermoelectric power and figure of merit in a ferromagnetic–quantum dot–superconducting device

AutorHwang, Sun-Yong; López, Rosa ; Sánchez, David
Fecha de publicación8-ago-2016
EditorAmerican Physical Society
CitaciónPhysical Review - Section B - Condensed Matter 94: 054506 (2016)
ResumenWe investigate the thermoelectric properties of a quantum dot coupled to ferromagnetic and superconducting electrodes. The combination of spin polarized tunneling at the ferromagnetic–quantum dot interface and the application of an external magnetic field that Zeeman splits the dot energy level leads to large values of the thermopower (Seebeck coefficient). Importantly, the thermopower can be tuned with an external gate voltage connected to the dot. We compute the figure of merit that measures the efficiency of thermoelectric conversion and find that it attains high values. We discuss the different contributions from Andreev reflection processes and quasiparticle tunneling into and out of the superconducting contact. Furthermore, we obtain dramatic variations of both the magnetothermopower and the spin Seebeck effect, which suggest that in our device spin currents can be controlled with temperature gradients only.
Versión del editorhttp://doi.org/10.1103/PhysRevB.94.054506
URIhttp://hdl.handle.net/10261/157553
DOI10.1103/PhysRevB.94.054506
ISSN1098-0121
E-ISSN1550-235X
Aparece en las colecciones: (IFISC) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
superconducting_device_Hwang.pdf479,64 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.