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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 α′-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.
Original language | English |
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Pages (from-to) | 201101 |
Number of pages | 1 |
Journal | Physical Review / B |
Volume | 65 |
Issue number | 20 |
DOIs | |
Publication status | Published - 2002 |
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Projects
- 1 Active
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Strongly-Correlated-Many-Body-Problems
Aichhorn, M., Pippan, P., Fulterer, A. M., Neuber, D. R., Knap, M., Evertz, H. G., Michel, F., von der Linden, W., Arrigoni, E. & Daghofer, M.
1/01/98 → …
Project: Research area