Artículos de revistas
Classical and quantum magnetoresistance in a two-subband electron system
Fecha
2009Registro en:
PHYSICAL REVIEW B, v.80, n.8, 2009
1098-0121
10.1103/PhysRevB.80.085304
Autor
Mamani, Nilo Francisco Cano
Gusev, Gennady
Silva, Euzi Conceicao Fernandes da
RAICHEV, O. E.
Quivy, Alain Andre
BAKAROV, A. K.
Institución
Resumen
We observe a large positive magnetoresistance in a bilayer electron system (double quantum well) as the latter is driven by the external gate from double to single layer configuration. Both classical and quantum contributions to magnetotransport are found to be important for explanation of this effect. We demonstrate that these contributions can be separated experimentally by studying the magnetic-field dependence of the resistance at different gate voltages. The experimental results are analyzed and described by using the theory of low-field magnetotransport in the systems with two occupied subbands.