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  Temperature dependence of optical spectral weights in quarter-filled ladder systems

Aichhorn, M., Horsch, P., von der Linden, W., & Cuoco, M. (2002). Temperature dependence of optical spectral weights in quarter-filled ladder systems. Physical Review B, 65(20): 201101.

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 Creators:
Aichhorn, M.1, Author           
Horsch, P.1, Author           
von der Linden, W.1, Author           
Cuoco, M.1, Author           
Affiliations:
1Department Quantum Many-Body Theory (Walter Metzner), Max Planck Institute for Solid State Research, Max Planck Society, ou_3370486              

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 Abstract: The temperature dependence of the integrated optical
conductivity I(T) reflects the changes of the kinetic energy as
spin and charge correlations develop. We calculated I(T) in the
frame of a t-J-V model for ladder systems, such as alpha(')-
NaV2O5, and show that the measured strong T dependence of I(T)
for NaV2O5 can be explained by the destruction of short-range
antiferromagnetic correlations. Thus I(T) provides detailed
information about the T dependence of superexchange energy and
thereby allows for an independent determination of magnetic
energy scales.

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Language(s): eng - English
 Dates: 2002
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 7272
ISI: 000176066600001
 Degree: -

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Title: Physical Review B
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 65 (20) Sequence Number: 201101 Start / End Page: - Identifier: ISSN: 0163-1829