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On the de Haas-van Alphen effect in inhomogeneous alloys

Neil Harrison·John Singleton
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Abstract

We show that Landau level broadening in alloys occurs naturally as a consequence of random variations in the local quasiparticle density, without the need to consider a relaxation time. This approach predicts Lorentzian-broadened Landau levels similar to those derived by Dingle using the relaxation-time approximation. However, rather than being determined by a finite relaxation time $τ$, the Landau-level widths instead depend directly on the rate at which the de Haas-van Alphen frequency changes with alloy composition. The results are in good agreement with recent data from three very different alloy systems.

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Neil Harrison, John Singleton. 2001-03-23. On the de Haas-van Alphen effect in inhomogeneous alloys. https://doi.org/10.1088/0953-8984/13/22/103

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