Magnetic homogeneity of the dynamic properties of (Ga,Mn)As films from the submicrometer to millimeter length scale

G. Woltersdorf; F. Hoffmann; H. G. Bauer; C. H. Back

doi:10.1103/PhysRevB.87.054422

Magnetic homogeneity of the dynamic properties of (Ga,Mn)As films from the submicrometer to millimeter length scale

G. Woltersdorf, F. Hoffmann, H. G. Bauer, C. H. Back

University of Regensburg

Research output: Contribution to journal › Article › peer-review

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Abstract

The diluted magnetic semiconductor (Ga,Mn)As is investigated with respect to its damping behavior using frequency dependent ferromagnetic resonance techniques. In particular we investigate the homogeneity of the spin relaxation mechanisms from a submicrometer length scale to several millimeters using time-resolved scanning Kerr microscopy in combination with ferromagnetic resonance. We find magnetic inhomogeneities on submillimeter and submicrometer length scales which lead to artificially broadened ferromagnetic resonance (FMR) lines in conventional experiments.

Original language	English
Article number	054422
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	87
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.87.054422
State	Published - 19 Feb 2013
Externally published	Yes

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10.1103/PhysRevB.87.054422

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abstract = "The diluted magnetic semiconductor (Ga,Mn)As is investigated with respect to its damping behavior using frequency dependent ferromagnetic resonance techniques. In particular we investigate the homogeneity of the spin relaxation mechanisms from a submicrometer length scale to several millimeters using time-resolved scanning Kerr microscopy in combination with ferromagnetic resonance. We find magnetic inhomogeneities on submillimeter and submicrometer length scales which lead to artificially broadened ferromagnetic resonance (FMR) lines in conventional experiments.",

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AU - Back, C. H.

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N2 - The diluted magnetic semiconductor (Ga,Mn)As is investigated with respect to its damping behavior using frequency dependent ferromagnetic resonance techniques. In particular we investigate the homogeneity of the spin relaxation mechanisms from a submicrometer length scale to several millimeters using time-resolved scanning Kerr microscopy in combination with ferromagnetic resonance. We find magnetic inhomogeneities on submillimeter and submicrometer length scales which lead to artificially broadened ferromagnetic resonance (FMR) lines in conventional experiments.

AB - The diluted magnetic semiconductor (Ga,Mn)As is investigated with respect to its damping behavior using frequency dependent ferromagnetic resonance techniques. In particular we investigate the homogeneity of the spin relaxation mechanisms from a submicrometer length scale to several millimeters using time-resolved scanning Kerr microscopy in combination with ferromagnetic resonance. We find magnetic inhomogeneities on submillimeter and submicrometer length scales which lead to artificially broadened ferromagnetic resonance (FMR) lines in conventional experiments.

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Magnetic homogeneity of the dynamic properties of (Ga,Mn)As films from the submicrometer to millimeter length scale

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