Suppression and recovery of quantum Hall plateaus in a parabolic quantum well

15 April 1991

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 43 (12) , 9988-9991
https://doi.org/10.1103/physrevb.43.9988

Abstract

The magnetotransport of a narrow (75-nm) parabolic well reveals suppressed quantum-Hall states at even-integer filling factors. The width of the parabolic well and the sheet carrier density determine which quantum Hall plateaus are observed. The observed behavior is explained by the influence of the magnetic field on the subband structure of the well.

Keywords

This publication has 12 references indexed in Scilit:

Collapse of integer Hall gaps in a double-quantum-well system
Physical Review Letters, 1990
Magnetic-field-driven destruction of quantum Hall states in a double quantum well
Physical Review Letters, 1990
Gate-controlled subband structure and dimensionality of the electron system in a wide parabolic quantum well
Applied Physics Letters, 1990
High quality electron system with variable electron layer thickness in a parabolic quantum well
Applied Physics Letters, 1989
Population process of the upper subband in ${Al}_{x} {Ga}_{1 - x} As$ -GaAs quantum wells
Physical Review B, 1989
Quantum Hall effect in wide parabolic GaAs/ ${Al}_{x}$ ${Ga}_{1 - x}$ As wells
Physical Review B, 1989
Magnetic field dependence of gate voltage and current in a GaAs-heterostructure in the quantum hall regime
Solid State Communications, 1987
Quantum Hall effect in ${In}_{0.53}$ ${Ga}_{0.47}$ As-InP heterojunctions with two populated electric subbands
Physical Review B, 1986
Specific Heat of Two-Dimensional Electrons in GaAs-GaAlAs Multilayers
Physical Review Letters, 1985
Cumulant approach to the two-dimensional magneto-conductivity problem
Surface Science, 1976