Dissipative transport in quantum Hall ferromagnets by spin-wave scattering

Andrew Green, NR Cooper

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We report on a study of the effect upon electrical transport of spin-wave scattering from charged quasiparticles in ν=1 quantum Hall ferromagnets, including both Heisenberg (single layer) and easy-plane (bilayer) cases. We derive a quantum Langevin equation to describe the resulting diffusive motion of the charged particle and use this to calculate the contribution to low-temperature conductivity from a density of charged particles. This conductivity has a power-law dependence upon temperature. The contribution is small at low temperatures increasing to a large value at relatively modest temperatures. We comment upon high-temperature transport and upon the contribution of scattering to the width of the zero bias peak in tunneling conductivity.
Original languageEnglish
Article number125329
JournalPhysical Review. B, Condensed matter and materials physics
Volume65
Issue number12
DOIs
Publication statusPublished - Mar 2002

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