Anisotropy of two-dimensional electron and hole mobilities in (001) GaAs/AlxGa1-xAs heterostructures under uniaxial stressстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Transport properties of two-dimensional electron and hole gas at (001)GaAs/AlxGa1-xAs heterointerface in [110] and [1-10] directions have been investigated for the first time under in plane uniaxial compression up to 5 kbar. Resistivity, Shubnikov-de Haas oscillations and Hall effect were measured and carrier densities and mobilities were determined. The in-plane uniaxial compression significantly modifies the energy spectrum of p-GaAs/AlxGa1-xAs that leads to strong anisotropy of hole mobility under compression. In the case of the n-type heterostructure uniaxial compression causes only change of the carrier concentration and the corresponding small change of the initial mobility anisotropy, determined by anisotropic surface roughness scattering.