Publication
Title
Average kinetic energy density of Cooper pairs above $T_{c}$ in $YBa_{2}Cu_{3}O_{7-x}$, $Bi_{2}Sr_{2}CaCu_{2}O_{8+\delta}$, and Nb
Author
Abstract
 We 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(2)Cu(3)O(7-x), an optimally doped single crystal of Bi(2)Sr(2)CaCu(2)O(8+delta), 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).
Language
English
Source (journal)
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
Publication
Lancaster, Pa : 2007
ISSN
1098-0121 [print]
1550-235X [online]
Volume/pages
76 :13 (2007) , p. 1-4
Article Reference
132502
ISI
000250619800018
Medium
E-only publicatie
Full text (Publisher's DOI)
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 Publication type Subject