BCS superconductivity in the van Hove scenario in s and d waves

dc.creator	Ghosh Angsula
dc.date	1999
dc.date.accessioned	2013-05-29T23:10:51Z
dc.date.available	2013-05-29T23:10:51Z
dc.date.issued	2013-05-30
dc.identifier	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97331999000300012
dc.identifier	http://www.doaj.org/doaj?func=openurl&genre=article&issn=01039733&date=1999&volume=29&issue=3&spage=483
dc.identifier.uri	http://koha.mediu.edu.my:8181/jspui/handle/123456789/2651
dc.description	The effect of including a van Hove singularity in the density of state of a renormalized BCS equation in s and d waves and its appropriateness in describing some properties of high-Tc cuprates in the weak-coupling region are studied in two space dimensions. The specific heat and knight shift as a function of temperature exhibit scaling below the critical temperature in d wave. We also study the jump in the specific heat at the critical temperature Tc in s and d waves, which can have values significantly higher than the standard BCS values and which increases with Tc, as experimentally observed in many d-wave high-Tc materials. The experimental results on the specific heat and knight shift of the Y-123 system are compared with the theoretical predictions.
dc.publisher	Sociedade Brasileira de Física
dc.source	Brazilian Journal of Physics
dc.title	BCS superconductivity in the van Hove scenario in s and d waves

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