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Electronic structure and aspects of unconventional superconductivity in NaxCoO2.yH2O

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dc.creator Rosner H.
dc.creator Drechsler S.-L.
dc.creator Fuchs G.
dc.creator Handstein A.
dc.creator Wälte A.
dc.creator Müller K.-H.
dc.date 2003
dc.date.accessioned 2013-06-01T10:49:08Z
dc.date.available 2013-06-01T10:49:08Z
dc.date.issued 2013-06-01
dc.identifier http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332003000400016
dc.identifier http://www.doaj.org/doaj?func=openurl&genre=article&issn=01039733&date=2003&volume=33&issue=4&spage=718
dc.identifier.uri http://koha.mediu.edu.my:8181/jspui/handle/123456789/8312
dc.description We examine the electronic structure of Na xCoO2.yH2O within the local density approximation. The parametrization of the band which forms the largest hole-Fermi surface centered at gamma 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-xCa xCu3O6+delta.
dc.publisher Sociedade Brasileira de Física
dc.source Brazilian Journal of Physics
dc.title Electronic structure and aspects of unconventional superconductivity in NaxCoO2.yH2O

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