Correlated Electron Systems

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This page gives an overview of our research in the field of correlated electron systems. For further information, please see also our publications.


In sodium cobaltate (NaxCoO2) the electrons in the CoO2 layers are strongly correlated and give rise to a very large thermoelectric effect. The sodium ions in between the CoO2 layers are mobile at elevated temperatures and arrange in various ordering patterns. Our research concentrates on the dependence of magnetic ground states and the electronic transport properties on changes in the sodium ordering. Using a defined cooling protocol we are able to induce different sodium orderings and investigate the resulting electronic ground states employing various techniques, such as electronic transport, specific heat or magnetisation measurements.

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Sun Jul 23 08:51:45 CEST 2017
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