Intersubband scattering in n-GaAs/AlGaAs wide quantum wells

Abstract

Slow magnetooscilations of the conductivity are observed in a 75 nm wide quantum well at heating of the two-dimensional electrons by a high-intensity surface acoustic wave. These magnetooscillations are caused by intersubband elastic scattering between the symmetric and asymmetric subbands formed due to an electrostatic barrier in the center of the quantum well. The tunneling splitting between these subbands as well as the intersubband scattering rate are determined.

5 pages, 5 figures

References in corpus (5)

• Resonance oscillations of magnetoresistance in double quantum wells
• Magneto-intersubband resistance oscillations in GaAs quantum wells placed in a tilted magnetic field
• Effective one-band approach for the spin splittings in quantum wells
• Resistance oscillations of two-dimensional electrons in crossed electric and tilted magnetic fields
• Magnetophonon oscillations of thermoelectric power and combined resonance in two-subband electron systems

Cited by in corpus (4)

• Composite fermions in a wide quantum well in the vicinity of the filling factor 1/2
• Nonlinear AC and DC Conductivities in a Two-Subband n-GaAs/AlAs Heterostructure
• AC and DC Conductivities in an n-GaAs/AlAs Heterostructure with a Wide Quantum Well in the Integer Quantum Hall Effect Regime
• Electronic band structure in $n$-type GaAs/AlGaAs wide quantum wells in tilted magnetic field