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Dresden 2006 – scientific programme

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TT: Tiefe Temperaturen

TT 7: Superconductivity & Solids At Low Temperature - Poster Session

TT 7.34: Poster

Monday, March 27, 2006, 14:00–17:45, P1

Spectroscopic investigations on NaxCoO2 — •T. Kroll1, A.A. Aligia 2, J. Geck1, D. Hawthorn 3, C. Hess1, T. Schwieger1, G. Krabbes1, C. Sekar1, D. Batchlor4, M. Knupfer1, J. Berger5, J. Fink1, G.A. Sawatzky3, and B. Büchner11IFW Dresden, P.O. Box 270016, D-01171 Dresden, Germany — 2Centro Atomico Bariloche (CAB), Av. Bustillo 9500, 8400 S.C. de Bariloche, Argentina — 3Advanced Materials and Process Engineering Laboratory (AMPEL), 2355 East Mall, Vancouver, BC, V6T 1Z4, Canada — 4Universität Würzburg, Am Hubland, D-97074 Würzburg — 5Institute of Physics of Complex Matter, EPFL, CH-1015 Lausanne, Switzerland

Since the discovery of superconductivity in 2003 in Na0.3CoO21.3H2O many investigations have been performed on these materials. In order to understand the physics behind the rich phase diagram of NaxCoO2 in more detail a good knowledge of its electronic structure is crucial. In this poster we present the results of different spectroscopic methods such as NEXAFS and XPS on a wide doping range for different temperatures and polarisation as well as cluster calculations which helps to understand the electronic structure of NaxCoO2.

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