Transverse magnetoresistance induced by electron-surface scattering on thin gold films: Experiment and theory
We report new experimental data regarding the transverse magnetoresistance measured in a family of thin gold films of different thickness with the electric field E oriented perpendicular to the magnetic field B (both fields contained within the plane of the film), as well as a theoretical descriptio...
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Veröffentlicht in: | Applied surface science 2014-01, Vol.289, p.167-172 |
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Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We report new experimental data regarding the transverse magnetoresistance measured in a family of thin gold films of different thickness with the electric field E oriented perpendicular to the magnetic field B (both fields contained within the plane of the film), as well as a theoretical description of size effects based upon a solution of Boltzmann Transport Equation. The measurements were performed at low temperatures T (4K≤T≤50K) under magnetic field strengths B (1.5T≤B≤9T). The magnetoresistance signal can be univocally identified as arising from electron-surface scattering, for the Hall mobility at 4K depends linearly on film thickness. The magnetoresistance signal exhibits a marked thickness dependence, and its curvature as a function of magnetic field B varies with film thickness. The theoretical description of the magnetic field dependence of the magnetoresistance requires a Hall field that varies with the thickness of the film; this Hall field is tuned to reproduce the experimental data. |
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ISSN: | 0169-4332 1873-5584 |
DOI: | 10.1016/j.apsusc.2013.10.128 |