INVESTIGADORES
MILANO Julian
artículos
Título:
Erratum: Magnetic Fe stripes created by self-organized MnAs template: Stripe edge pinning and high-frequency properties (Physical Review B - Condensed Matter and Materials Physics (2009) 80 (155427))
Autor/es:
S. TACCHI; M. MADAMI; G. CARLOTTI; G. GUBBIOTTI; M. MARANGOLO; J. MILANO; BREITWIESER, R.; V. H. ETGENS; STAMPS, R.; M. G. PINI
Revista:
PHYSICAL REVIEW B - CONDENSED MATTER AND MATERIALS PHYSICS
Editorial:
American Physical Society
Referencias:
Año: 2010 vol. 82 p. 209901 - 209901
ISSN:
0163-1829
Resumen:
Self-organization is an interesting route to the fabrication of
nanostructured magnetic materials. Here we show that, near room
temperature, an ultrathin Fe film deposited on a suitable MnAs template
spontaneously breaks into a lateral superlattice of magnetic stripes.
The magnetic superstructure originates from the temperature-dependent
morphological change in the substrate: an epitaxially grown
MnAs/GaAs(001) film, whose groove-ridge structure was investigated by
scanning tunneling microscopy. Owing to the stray magnetic fields
produced by the underlying MnAs template, the Fe stripe domains have
opposite magnetizations, and behave essentially as independent magnetic
entities because of strong stripe edge pinning. This is shown
dramatically in terms of a split microwave resonance that can be
controlled with an external magnetic field, as proved by Brillouin
light-scattering data and analysis of the Fe spin-wave frequencies.
Additionally, the potential for device applications of such lateral
magnetic superlattices, displaying an inverse exchange-spring
behavior, is discussed.