Broadband electrical detection of spin excitations in (Ga,Mn)As using a photovoltage technique

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dc.creatorWirthmann, André
dc.creatorHui, Xiong
dc.creatorMecking, N.
dc.creatorGui, Y. S.
dc.creatorChakraborty, T.
dc.creatorReinwald, M.
dc.creatorSchüller, C.
dc.creatorWegscheider, W.
dc.creatorHu, C. -M.
dc.date2008-06-04
dc.date.accessioned2026-07-07T09:43:54Z
dc.date.available2026-07-07T09:43:54Z
dc.descriptionWe report on microwave photovoltage and simultaneous magnetotransport measurements in a (Ga,Mn)As film oriented normal to the magnetic field. We detect the ferromagnetic resonance over a broad frequency range of 2 GHz to 18.5 GHz and determine the spectroscopic g-factor and separate the Gilbert from the inhomogeneous contribution to magnetization relaxation. Temperature dependent measurements below the saturation magnetization indicate that the photovoltage signal can serve as a sensitive tool to study the crystal anisotropy. We demonstrate that the combination of spin dynamics with charge transport is a promising tool to study microstructured ferromagnetic semiconductor samples.
dc.description3 pages, 2 figures, revtex4, APL
dc.identifierhttps://arxiv.org/abs/0806.0785
dc.identifierhttp://arxiv.org/abs/0806.0785
dc.identifierAPL 92 232106 (2008)
dc.identifierdoi:10.1063/1.2943280
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/162687
dc.subjectMaterials Science
dc.subjectMesoscale and Nanoscale Physics
dc.titleBroadband electrical detection of spin excitations in (Ga,Mn)As using a photovoltage technique
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