38 research outputs found
Composite Fermions with Spin Freedom
General rule for the composite fermion transformation, when the spins of the
electrons are not polarized is derived. Condition for the quantum phase
transition between various spin states is obtained based on the rule. This rule
gives foundation for the experimental determination of the mass and -factor
of the composite fermion.Comment: 5 pages with 1 ps figure, Revtex, to be published in J. Phys. Soc.
Jpn. Vol.68 No.10. Misprints are correcte
Inter-layer Edge Tunneling and Transport Properties in Double-Layer Quantum Hall Systems
A theory of transport in the quantum Hall regime is developed for separately
contacted double-layer electron systems. Inter-layer tunneling provides a
channel for equilibration of the distribution functions in the two layers and
influences transport properties through the resulting influence on steady-state
distribution functions. Resistences for various configurations of the
electrodes are calculated as a function of the inter-layer tunneling amplitude.
The effect of misalignment of the edges of the two layers and the effect of
tilting the magnetic field away from the normal to the layers on the inter-
layer tunneling amplitude near the sample edges are investigated. The results
obtained in this work is consistent with recent experiments.Comment: 4 pages, uses sprocl.sty, one PS figures to be included by psfig.
Paper to be published at Int. Conf. on "High Magnetic Fields in Semiconductor
Physics", Wuerzburg, 28 July-02 August, 199
Edge State Transport of Separately Contacted Bilayer Systems in the Fractional Quantum Hall Regime
Hall and diagonal resistances of bilayer fractional quantum Hall systems are
discussed theoretically. The bilayers have electrodes attached separately to
each layer. They are assumed to be coupled weakly by interlayer tunneling,
while the interlayer Coulomb interaction is negligibly small. It is shown that
source-drain voltage dependence of the resistances reflects the Luttinger
liquid parameter of the edge state.Comment: 3 pages with 2 eps figure, Revtex, contributed paper to EP2DS-1