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  Scale-dependent correction to the dynamical conductivity of a disordered system at unitary symmetry

Ostrovsky, P., Nakayama, T., Muttalib, K. A., & Wölfle, P. (2013). Scale-dependent correction to the dynamical conductivity of a disordered system at unitary symmetry. New Journal of Physics, 15: 055010.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000E-C6A5-8 Version Permalink: https://hdl.handle.net/21.11116/0000-000E-C6A6-7
Genre: Journal Article

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Ostrovsky, P.1, Author
Nakayama, T., Author
Muttalib, K. A., Author
Wölfle, P., Author
Affiliations:
1Max Planck Society, ou_persistent13              

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 Abstract: Anderson localization has been studied extensively for more than half a century. However, while our understanding has been greatly enhanced by calculations based on a small epsilon expansion in d = 2 + epsilon dimensions in the framework of nonlinear sigma models, those results cannot be safely extrapolated to d = 3. Here we calculate the leading scale- dependent correction to the frequency- dependent conductivity sigma (omega) in dimensions d <= 3. At d = 3, we find a leading correction Re sigma (omega) proportional to vertical bar omega vertical bar, which at low frequency is much larger than the omega(2) correction derived from the Drude law. We also determine the leading correction to the renormalization group beta-function in the metallic phase at d = 3.

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Language(s): eng - English
 Dates: 2013
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Internal
 Identifiers: eDoc: 672282
ISI: 000318968800001
 Degree: -

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Title: New Journal of Physics
Source Genre: Journal
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Pages: - Volume / Issue: 15 Sequence Number: 055010 Start / End Page: - Identifier: ISSN: 1367-2630