We study the magnetic field dependence of the correlation field ΔBc and amplitude δg of the conductance fluctuations, observed in the low temperature magnetoresistance of GaAs/AlGaAs split-gate wires. Near zero field, universality of quantum interference is retained and the magnetoresistance shows universal conductance fluctuations. At high magnetic fields, although the discrete Landau level quantization becomes resolved. ΔBc and δg are found to increase linearly with magnetic field, with a slope which depends upon the nature of electron scatterings in the wire.
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Electrical and Electronic Engineering