Wirthmann, Andre and Hui, Xiong and Mecking, N. and Gui, Y. S. and Chakraborty, T. and Hu, C. -M. and Reinwald, M. and Schueller, C. and Wegscheider, W. (2008) Broadband electrical detection of spin excitations in Ga(0.98)Mn(0.02)As using a photovoltage technique. APPLIED PHYSICS LETTERS, 92 (23): 232106. ISSN 0003-6951,
Full text not available from this repository. (Request a copy)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 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. (C) 2008 American Institute of Physics.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FERROMAGNETIC-RESONANCE; MAGNETIC-ANISOTROPY; (GA,MN)AS; SEMICONDUCTORS; GA1-XMNXAS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics Physics > Institute of Experimental and Applied Physics > Chair Professor Lupton > Group Christian Schüller |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 29 Oct 2020 10:09 |
| Last Modified: | 29 Oct 2020 10:09 |
| URI: | https://pred.uni-regensburg.de/id/eprint/30743 |
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