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| Format: | Artículo científico |
| Language: | en |
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Sociedade Brasileira de Física
2003
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| Online Access: | https://www.redalyc.org/articulo.oa?id=46413573016 |
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Table of Contents:
- Electronic Structure and Aspects of Unconventional Superconductivity in NaxCoO2 yH2O H. Rosner S.-L. Drechsler G. Fuchs A. Handstein A. Wälte K.-H. Müller Física, Astronomía y Matemáticas We examine the electronic structure of NaxCoO2.yH2O within the local density approximation. The parametrization of the band which forms the largest hole-Fermi surface centered at ¡ shows significant deviations from what is frequently assumed in recent sophisticated theoretical studies. In particular, the commonly used nearest neighbor approaches in the framework of single band pictures are found to be unrealistic. The special role of H2O in screening the disorder in the charge reservoir is briefly discussed and compared with the case of Y1¡xCaxCu3O6+±. 2003 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46413573016 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4 Vol.33