A real space scaling of electron charge fluctuations in strongly correlated oxides

E.I. Proinov and N.M. Neshev

Physica A: Statistical Mechanics and its Applications, 1991, vol. 174, issue 2, 533-551

Abstract: Electron charge fluctuations in strongly correlated oxides are described in terms of local fluctuations of the electron occupancy in the real crystal space. The model is based on a real space scaling procedure using known exact properties of the reduced density matrices in site representation. A novel state of maximum electron localization is obtained as a result of this procedure. In this state the charge fluctuation vanishes within a region of 2d Wigner-Seitz unit cells, where d is the dimensionality. It is proved that such a state is antiferromagnetically ordered with a special synchronization between the local superexchange fluctuations. A tendency for real space pairing is indicated and a relation with the RVB state is discussed.

Date: 1991
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:174:y:1991:i:2:p:533-551

DOI: 10.1016/0378-4371(91)90347-F

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