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Dissipative transport in quantum Hall ferromagnets by spin-wave scattering

Green, AG; Cooper, NR; (2002) Dissipative transport in quantum Hall ferromagnets by spin-wave scattering. Physical Review B , 65 (12) , Article 125329. 10.1103/PhysRevB.65.125329. Green open access

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Abstract

We report on a study of the effect upon electrical transport of spin-wave scattering from charged quasiparticles in nu = 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.

Type: Article
Title: Dissipative transport in quantum Hall ferromagnets by spin-wave scattering
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevB.65.125329
Publisher version: http://dx.doi.org/10.1103/PhysRevB.65.125329
Language: English
Additional information: © APS 2000
Keywords: Magnetic-field, Skyrmions, Systems, Conductivity, Temperature, Integer, Energy
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/1333470
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