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It was reported earlier that the polarization of microwaves substantially influence on amplitude of microwave induced resistance oscillations (MIRO) that was investigated in detail in number of works in terms of different approaches to explain the MIRO arising. In our work rotation of the angle between microwave electric field and current direction in Hall bar was demonstrated experimentally to influence...
Measurements of magnetoresistance in a high-mobility two-dimensional electron gas contained in a GaAs quantum well on cylindrical surface exposed to microwave radiation are reported in the present work. The responses to microwave radiation in the magnetotransport of two-dimensional electron gas are shown to be different on planar and cylindrical surfaces. Qualitative explanations to the letter differences...
We present the results of micro-Raman scattering study of acoustic phonons of InAs/AlAs quantum dot superlattices grown by molecular beam epitaxy in the Stranski–Krastanow growth mode.Raman scattering from the planar surface and the cleaved (110)-oriented edge of the nanostructures was investigated. Doublets of folded longitudinal acoustic (FLA) phonons up to 7th order were observed in the Raman spectra...
It is shown that Stranski-Krastanov transition, i. e. the change of the growth mode from 2D to 3D in the formation of InAs quantum dots on (001) GaAs is actually a two-dimensional phase transition in the lattice-gas model. The density of lattice gas in quantum dots ensemble changes abruptly from low to high value corresponding to the liquid of quantum dots. The lateral interaction has a decisive role...
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