Article ID Journal Published Year Pages File Type
1545592 Physica E: Low-dimensional Systems and Nanostructures 2012 7 Pages PDF
Abstract

The complex investigation of the magneto-transport effects in structures containing multiple quantum well (MQWs) based on the GaAs/AlGaAs-heterostructures has been performed. The MQWs investigated have different electron densities in QWs. The parameters of 2DEG in MQWs were determined from the data of the Integer Quantum Hall Effect (IQHE) and Shubnikov-de Haas oscillations (SdH) observed at low temperatures (0.6–4.2 K). The method of calculation of the electron states energies in MQWs has been developed which is based on the splitting of these states due to the exchange interaction (SAS-splitting, see D. Płoch et al., Phys. Rev. B 79 (2009) 195434) including the screening of this interaction. The IQHE and SdH observed in these multilayer structures with the third degree of freedom for electrons are interpreted from this.

► The IQHE and SdH oscillations have been observed in MQWs investigated. ► We have developed a model of the LLs energies calculation for MQWs. ► The values of the Hall resistance correspond to the factor of degeneration. ► Research cycle performed confirms the conception of e–e interaction applied to MQWs.

Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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