Subthreshold velocity-field characteristics for bulk and epitaxial InP

Abstract
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.