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

Markus Aichhorn, Peter Horsch, Wolfgang von der Linden, Mario Cuoco

Publikation: Beitrag in einer FachzeitschriftArtikelBegutachtung

Abstract

The temperature dependence of the integrated optical conductivity (formula presented) reflects the changes of the kinetic energy as spin and charge correlations develop. We calculated (formula presented) in the frame of a (formula presented) model for ladder systems, such as (formula presented) and show that the measured strong T dependence of (formula presented) for (formula presented) can be explained by the destruction of short-range antiferromagnetic correlations. Thus (formula presented) provides detailed information about the T dependence of superexchange energy and thereby allows for an independent determination of magnetic energy scales.

Originalspracheenglisch
Aufsatznummer201101
Seitenumfang4
FachzeitschriftPhysical Review B
Jahrgang65
Ausgabenummer20
DOIs
PublikationsstatusVeröffentlicht - 2002

ASJC Scopus subject areas

  • Elektronische, optische und magnetische Materialien
  • Physik der kondensierten Materie

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