Damping and magnetic anisotropy of ferromagnetic GaMnAs thin films

Simple item page
dc.creatorKhazen, Kh.
dc.creatorvon Bardeleben, H. J.
dc.creatorCubukcu, M.
dc.creatorCantin, J. L.
dc.creatorNovak, V.
dc.creatorOlejnik, K.
dc.creatorCukr, M.
dc.creatorThevenard, L.
dc.creatorLemaitre, A.
dc.date2008-09-26
dc.date2008-09-30
dc.date.accessioned2026-07-07T10:05:57Z
dc.date.available2026-07-07T10:05:57Z
dc.descriptionThe magnetic properties of annealed, epitaxial Ga0.93Mn0.07As layers under tensile and compressive stress have been investigated by X-band (9GHz) and Q-band (35GHz) ferromagnetic resonance (FMR) spectroscopy. From the analysis of the linewidths of the uniform mode spectra the FMR Gilbert damping factor "alpha" has been determined. At T=4K we obtain a minimum damping factor of "alpha" = 0.003 for the compressively stressed layer. Its value is not isotropic. It has a minimum value for the easy axes orientations of the magnetic field and increases with the measuring temperature. Its average value is for both type of films of the order of 0.01 in spite of strong differences in the inhomogeneous linewidth which vary between 20 Oe and 600 Oe for the layers grown on GaAs and GaInAs substrates respectively.
dc.description23 pages, 2 tables, 13 figures,
dc.identifierhttps://arxiv.org/abs/0809.4644
dc.identifierhttp://arxiv.org/abs/0809.4644
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/170169
dc.subjectMaterials Science
dc.subjectMesoscale and Nanoscale Physics
dc.titleDamping and magnetic anisotropy of ferromagnetic GaMnAs thin films
dc.typetext

Files

Collections

arXiv