Artículo

Anisotropic magnetic-field-induced phase transition in MnAs nanoribbons

Fernandez Baldis, Federico JoseIcon ; Sirena, MartinIcon ; Steren, Laura BeatrizIcon ; Etgens, V.H.; Eddrief, M.; Ulysse, C.; Faini, G.
Fecha de publicación: 06/2015
Editorial: American Institute of Physics
Revista: Applied Physics Letters
ISSN: 0003-6951
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:

Resumen

MnAs thin films present a phase coexistence of regularly arranged ferromagnetic (alfa) and paramagnetic (beta) stripes below the Curie temperature when grown onto GaAs(100) substrates. In this letter, we report the observation of a magneto-structural phase transition induced by magnetic field on MnAs nanoribbons below the Curie temperature. A transformation of high-resistance paramagnetic regions into low-resistance ferromagnetic ones is observed above temperature-dependentcritical magnetic fields. The phenomenon is hysteretic, highly anisotropic, and size dependent and could be the origin of the high magneto-resistance effect observed at temperatures close to room temperature in these systems.
Palabras clave: Magnetism , Spintronics
 
Archivos asociados
Thumbnail
 
Tamaño: 1.054Mb
Formato: PDF
.
Licencia
info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/41667
DOI: http://dx.doi.org/10.1063/1.4926567
URL: https://aip.scitation.org/doi/full/10.1063/1.4926567
Colecciones
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Citación
Fernandez Baldis, Federico Jose; Sirena, Martin; Steren, Laura Beatriz; Etgens, V.H.; Eddrief, M.; et al.; Anisotropic magnetic-field-induced phase transition in MnAs nanoribbons; American Institute of Physics; Applied Physics Letters; 107; 6-2015; 12407-12411
Compartir
Altmétricas