Experimental studies have been performed on the velocity-field characteristics of AlGaN/GaN heterostructures. A pulsed voltage input in combination with a four-point measurement was used in a 50 Ω environment to determine the drift velocity of electrons in the two-dimensional electron gas as a function of the applied electric field. These measurements show an apparent saturation velocity near 3.1×10 7cm/s, at a field of 140 kV/cm. A comparison of these studies shows that the experimental velocities are close to previously published simulations based upon Monte Carlo techniques.

Original languageEnglish (US)
Title of host publicationPhysica Status Solidi C: Conferences
Number of pages5
StatePublished - 2005

ASJC Scopus subject areas

  • Condensed Matter Physics


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