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

Wirthmann, André and Hui, Xiong and Mecking, N. and Gui, Y. S. and Chakraborty, Tapash and Hu, C. M. and Reinwald, Matthias and Schüller, Christian and Wegscheider, Werner (2008) Broadband electrical detection of spin excitations in Ga0.98Mn0.02As using a photovoltage technique. Applied Physics Letters 92 (23), p. 232106.

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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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Item Type:Article
Date:11 June 2008
Institutions:Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider
Identification Number:
Related URLs:
75.70.Ak; 73.50.Pz; 73.50.Jt; 75.40.Gb; 76.50.+g; 75.50.Dd; PACS
Keywords:crystal microstructure, ferromagnetic materials, ferromagnetic resonance, gallium compounds, galvanomagnetic effects, g-factor, magnetic thin films, magnetisation, manganese compounds, photovoltaic effects, semiconductor thin films, spin dynamics
Subjects:500 Science > 530 Physics
Created at the University of Regensburg:Unknown
Owner: Martin Kaiser
Deposited On:25 Jan 2010 14:00
Last Modified:13 Mar 2014 12:43
Item ID:12502
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