Title
Average kinetic energy density of Cooper pairs above <tex>$T_{c}$</tex> in <tex>$YBa_{2}Cu_{3}O_{7-x}$</tex>, <tex>$Bi_{2}Sr_{2}CaCu_{2}O_{8+\delta}$</tex>, and Nb Average kinetic energy density of Cooper pairs above <tex>$T_{c}$</tex> in <tex>$YBa_{2}Cu_{3}O_{7-x}$</tex>, <tex>$Bi_{2}Sr_{2}CaCu_{2}O_{8+\delta}$</tex>, and Nb
Author
Publication type
article
Publication
Lancaster, Pa ,
Subject
Physics
Source (journal)
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
Volume/pages
76(2007) :13 , p. 1-4
ISSN
1098-0121
1550-235X
1098-0121
Article Reference
132502
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
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).
Full text (open access)
https://repository.uantwerpen.be/docman/irua/73ac0a/5759.pdf
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