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

0502359 - FZÚ 2019 RIV GB eng J - Článek v odborném periodiku
Woltersdorf, G. - Stigloher, J. - Koerner, H. S. - Hoffmann, F. - Kiessling, M. - Novák, Vít - Chauleau, J-Y. - Back, C.H.
Spatial constraints on the source of uniaxial anisotropy in (Ga,Mn)As films.
Journal of Physics D-Applied Physics. Roč. 47, č. 19 (2014), s. 1-3, č. článku 195001. ISSN 0022-3727. E-ISSN 1361-6463
Grant CEP: GA MŠMT(CZ) LM2011026
Institucionální podpora: RVO:68378271
Klíčová slova: diluted magnetic semiconductor * anisotropy * ferromagnetic resonance
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 2.721, rok: 2014

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.
Trvalý link: http://hdl.handle.net/11104/0294299