The effect of a small dose of gamma irradiation on transport characteristics of the two-dimensional electron gas (2DEG) in heterostructures was investigated. It is shown that the carrier concentration remains practically unchanged after an irradiation dose of , while the 2DEG mobility exhibits a considerable increase. The results are explained within a model that takes into account the relaxation of elastic strains and structural-impurity ordering occurring in the barrier layer under irradiation.
Mechanism of mobility increase of the two-dimensional electron gas in heterostructures under small dose gamma irradiation
A. M. Kurakin, S. A. Vitusevich, S. V. Danylyuk, H. Hardtdegen, N. Klein, Z. Bougrioua, B. A. Danilchenko, R. V. Konakova, A. E. Belyaev; Mechanism of mobility increase of the two-dimensional electron gas in heterostructures under small dose gamma irradiation. J. Appl. Phys. 15 April 2008; 103 (8): 083707. https://doi.org/10.1063/1.2903144
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