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- URN zum Zitieren dieses Dokuments:
- urn:nbn:de:bvb:355-epub-462511
- DOI zum Zitieren dieses Dokuments:
- 10.5283/epub.46251
Zusammenfassung
We study the low-frequency behavior of the ac conductivity σ(ω) of a two-dimensional fermion gas subject to a smooth random potential (RP) or random magnetic field (RMF). We find a nonanalytic ∝|ω| correction to Reσ, which corresponds to a 1/t2 long-time tail in the velocity correlation function. This contribution is induced by return processes neglected in Boltzmann transport theory. The ...
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