title: Magnon excitation by spin injection in thin Fe/Cr/Fe films
abstract: The technique of Brillouin light scattering is used to observe strong excitation of magnons in antiferromagnetically coupled trilayers of Fe/Cr/Fe at room temperature. The magnons are driven out of equilibrium by a microwave current applied in the trilayer through point contacts. The magnitude of the scattering intensity is investigated as a function of the magnon wave number and applied magnetic field. Confirming recent theoretical predictions, the observations provide strong evidence of electronic spin injection in the rf driving field.
authors.affiliation: Departamento de Fisica, Universidade Federal de Pernambuco, 50670-901 Recife-PE, Brazil.
authors.initials: SM
authors.lastname: Rezende
authors.lastname: de Aguiar FM
authors.initials: MA
authors.lastname: Lucena
authors.initials: A
authors.lastname: Azevedo