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Please use this identifier to cite or link to this item: http://dspace.mediu.edu.my:8181/xmlui/handle/123456789/7862
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dc.creatorMarino Eduardo C.-
dc.creatorSilva Neto Marcello B.-
dc.date2002-
dc.date.accessioned2013-06-01T09:33:53Z-
dc.date.available2013-06-01T09:33:53Z-
dc.date.issued2013-06-01-
dc.identifierhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332002000400008-
dc.identifierhttp://www.doaj.org/doaj?func=openurl&genre=article&issn=01039733&date=2002&volume=32&issue=3&spage=710-
dc.identifier.urihttp://koha.mediu.edu.my:8181/jspui/handle/123456789/7862-
dc.descriptionWe study the formation of Cooper pairs in high-Tc cuprate superconductors within a spin uctuation model for doped quantum Heisenberg antiferromagnets. The charge of the dopants (chargons) is associated to quantum skyrmion excitations of the Cu++ antiferromagnetic spin background. We then compute the quantum skyrmion e effective interaction potential as a function of doping and temperature in order to study charge pairing. It becomes clear that Cooper pair formation is determined by the competition between the spin uctuations of the Cu++ magnetic ions and the spins of the O-- doped holes (spinons). The superconducting transition occurs when the effective potential allows for skyrmion bound states. Our theoretical predictions for the superconducting phase diagram of La2-x Sr x CuO4 and YBa2 Cu3O6+x are in good agreement with experiment.-
dc.publisherSociedade Brasileira de Física-
dc.sourceBrazilian Journal of Physics-
dc.titleCooper pairing and superconductivity in a spin fluctuation model for high-Tc cuprate superconductors-
Appears in Collections:Physics and Astronomy

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