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Two-dimensional electron gas adjacent to a grain boundary in bicrystal of narrow-gap semiconductor p- Hg_{0.79}Cd_{0.19}Mn_{0.02}Te has been studied under ultra strong impulse magnetic fields (up to 140 T). Both cyclotron resonance and quantum Hall effect are measured for the same samples. The values of the resonance fields point to strong nonparabolicity. A broadening of the line is interpreted in...
Electronic transport phenomena in molecular beam epitaxy grown silicon δ-doped AlGaAs/GaAs quantum wells and GaAs layers were investigated. Observations of the Shubnikov-de Haas oscillations allowed to deduce the redistribution of electrons among energy subbands formed by V-shaped and rectangular wells for GaAs layers and the AlGaAs/GaAs quantum wells, respectively. In both cases the effects of...
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