English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/122545
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:

Magnon-drag thermopile

AutorCostache, Marius V. ; Bridoux, Germàn; Neumann, Ingmar ; Valenzuela, Sergio O.
Fecha de publicación2012
EditorNature Publishing Group
CitaciónNature Materials 11: 199-202 (2012)
ResumenThermoelectric effects in spintronics are gathering increasing attention as a means of managing heat in nanoscale structures and of controlling spin information by using heat flow. Thermal magnons (spin-wave quanta) are expected to play a major role; however, little is known about the underlying physical mechanisms involved. The reason is the lack of information about magnon interactions and of reliable methods to obtain it, in particular for electrical conductors because of the intricate influence of electrons. Here, we demonstrate a conceptually new device that enables us to gather information on magnon–electron scattering and magnon-drag effects. The device resembles a thermopile formed by a large number of pairs of ferromagnetic wires placed between a hot and a cold source and connected thermally in parallel and electrically in series. By controlling the relative orientation of the magnetization in pairs of wires, the magnon drag can be studied independently of the electron and phonon-drag thermoelectric effects. Measurements as a function of temperature reveal the effect on magnon drag following a variation of magnon and phonon populations. This information is crucial to understand the physics of electron–magnon interactions, magnon dynamics and thermal spin transport.
Versión del editorhttp://dx.doi.org/10.1038/nmat3201
Identificadoresdoi: 10.1038/nmat3201
issn: 1476-1122
e-issn: 1476-4660
Aparece en las colecciones: (CIN2) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Magnon-drag thermopile.pdf641,16 kBAdobe PDFVista previa
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.