Experimental evidence for Drude-Boltzmann-like transport in a two-dimensional electron gas in an AlGaN/GaN heterostructure
Journal
Journal of the Korean Physical Society
Journal Volume
48
Journal Issue
6
Pages
1539-1543
Date Issued
2006
Author(s)
Chen, J.-H.
Lin, J.-Y.
Tsai, J.-K.
Park, H.
Kim, G.-H.
Youn, D.H.
Cho, H.-I.
Lee, E.-J.
Lee, J.-H.
Chen, Y.F.
Abstract
Abstract We report transport measurements on an AlGaN/GaN two?dimensional electron gas (2DEG) as a function of magnetic field B over a wide range of temperature (0.3 K ? T ? 80 K). At T = 20 K, the electron?electron interaction effect in the diffusive limit is expected to be strongly suppressed, causing the longitudinal resistivity �l xx ( B ) te be nomially B ?independent at low field B < 6 T. At T = 80 K, �l xx ( B ) is nomially B ?independent for B < 13 T. The range of nominally B ?independent �l xx increases with increasing temperature due to the suppression of electron?electron interaction effects. (? 2006 WILEY?VCH Verlag GmbH & Co. KGaA, Weinheim)
Type
journal article