High-field electron transport in AlGaN/GaN heterostructures.

Journal Article · Wed Jun 01 04:00:00 EDT 2005 · Proposed for publication in Physica Status Solidi.

OSTI ID:972131

Koleske, Daniel David; Goodnick, S M ^[1]; Shul, Randy John; Allerman, Andrew Alan; Barker, J M ^[1]; Ferry, D K ^[1]

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1. Arizona State University, Tempe, AZ

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 {Omega} environment to determinethe 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 x 10{sub 7} cm/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.

• Research Organization: Sandia National Laboratories
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 972131
• Report Number(s): SAND2005-3565J
• Journal Information: Proposed for publication in Physica Status Solidi., Journal Name: Proposed for publication in Physica Status Solidi.
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ELECTRIC FIELDS
ELECTRON GAS
ELECTRONS
SATURATION
TRANSPORT
VELOCITY