Spatial constraints on the source of uniaxial anisotropy in (Ga,Mn)As films

Woltersdorf, G. and Stigloher, J. and Koerner, H. S. and Hoffmann, F. and Kiessling, M. and Novak, V. and Chauleau, J-Y and Back, C. H. (2014) Spatial constraints on the source of uniaxial anisotropy in (Ga,Mn)As films. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 47 (19): 195001. ISSN 0022-3727, 1361-6463

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Abstract

We use time-resolved Kerr microscopy to perform ferromagnetic resonance experiments on nanostructured elements to show that strain is not the origin of the strong uniaxial in-plane anisotropy observed in (Ga, Mn) As films. From local angular dependent ferromagnetic resonance measurements we are able to extract the anisotropy constants. We observe no change of the strong uniaxial anisotropy in disks as small as 200 nm.

Item Type: Article
Uncontrolled Keywords: SEMICONDUCTORS; diluted magnetic semiconductor; anisotropy; ferromagnetic resonance
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back
Depositing User: Dr. Gernot Deinzer
Date Deposited: 08 Nov 2019 13:26
Last Modified: 08 Nov 2019 13:26
URI: https://pred.uni-regensburg.de/id/eprint/10185

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