Abstract
Although it is well established that vanadium doping can yield thermally stable semi-insulating gallium arsenide, the mechanisms by which it does so are unclear [1], and the levels due to the various valence states of vanadium need further elucidation. Acoustic techniques have been very useful in studying the related chromium centres in GaAs and we report here acoustic attenuation measurements made by pulse-echo techniques between 2K and 50K and at frequencies between 200 MHz and 2 GHz on a range of vanadium doped samples. The effect of illumination with either “white” or silicon filtered light (hυ < 1.1 eV) was also investigated; a long wavelength cut-off of 0.78 eV was imposed by the fibre optic light pipe used.
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© 1986 Springer-Verlag Berlin Heidelberg
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King, P.J., Atkinson, I. (1986). Acoustic Losses Due to Vanadium in Gallium Arsenide. In: Anderson, A.C., Wolfe, J.P. (eds) Phonon Scattering in Condensed Matter V. Springer Series in Solid-State Sciences, vol 68. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82912-3_38
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DOI: https://doi.org/10.1007/978-3-642-82912-3_38
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