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Broadband electrical detection of spin excitations in Ga0.98Mn0.02As using a photovoltage technique

DOI to cite this document:
10.5283/epub.12502
Wirthmann, André ; Hui, Xiong ; Mecking, N. ; Gui, Y. S. ; Chakraborty, Tapash ; Hu, C. M. ; Reinwald, Matthias ; Schüller, Christian ; Wegscheider, Werner
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Date of publication of this fulltext: 25 Jan 2010 14:00


Abstract

We 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 2–18.5 GHz and determine the spectroscopic g-factor and separate the Gilbert from the inhomogeneous contribution to magnetization relaxation. Temperature dependent measurements below ...

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