Quantum Hall Ferromagnets

Details Quantum Hall Ferromagnets Quantum Hall Ferromagnets

1994-03-16

arxiv.org/abs/cond-mat/9403063v1

Physics

Condensed Matter

4 pages, Revtex, Ohio State University

Scientific paper

10.1103/PhysRevLett.73.874

It is pointed out recently that the $\nu=1/m$ quantum Hall states in bilayer systems behave like easy plane quantum ferromagnets. We study the magnetotransport of these systems using their ``ferromagnetic" properties and a novel spin-charge relation of their excitations. The general transport is a combination of the ususal Hall transport and a time dependent transport with $quantized$ time average. The latter is due to a phase slippage process in $spacetime$ and is characterized by two topological constants. (Figures will be provided upon requests).

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