The subthreshold electron velocity-field characteristic has been measured at room temperature for a range of bulk and epitaxial samples of n-type InP having low-field Hall mobilities in the range 3600–4950 cm2/V s. The threshold field for current instabilities is found to be between 10.5 and 11.5 kV/cm and the peak velocity is 2.5×107 cm/s.
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Majerfeld et al. (1974) studied this question.
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