The average kinetic energy density of Cooper pairs above $T_c$ in ${\rm YBa_2Cu_3O_{7-x}}$, ${\rm Bi_2Sr_2CaCu_2O_{8+δ}}$, and ${\rm Nb}$

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dc.creatorSalem-Sugui Jr., S.
dc.creatorDoria, Mauro M.
dc.creatorAlvarenga, A. D.
dc.creatorVieira, V. M.
dc.creatorFarinas, P. F.
dc.creatorSinnecker, J. P.
dc.date2007-10-12
dc.date.accessioned2026-07-07T08:35:59Z
dc.date.available2026-07-07T08:35:59Z
dc.descriptionWe have obtained isofield curves for the square root of the average kinetic energy density of the superconducting state for three single crystals of underdoped $YBa_2Cu_3O_{7-x}$, an optimally doped single crystal of $Bi_2Sr_2CaCu_2O_{8+δ}$, and Nb. These curves, determined from isofield magnetization versus temperature measurements and the virial theorem of superconductivity, probe the order parameter amplitude near the upper critical field. The striking differences between the Nb and the high-$T_c$ curves clearly indicate for the latter cases the presence of a unique superconducting condensate below and above $T_c$.
dc.identifierhttps://arxiv.org/abs/0710.2459
dc.identifierhttp://arxiv.org/abs/0710.2459
dc.identifierPRB 76, 132502 (2007)
dc.identifierdoi:10.1103/PhysRevB.76.132502
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/139925
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleThe average kinetic energy density of Cooper pairs above $T_c$ in ${\rm YBa_2Cu_3O_{7-x}}$, ${\rm Bi_2Sr_2CaCu_2O_{8+δ}}$, and ${\rm Nb}$
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