Article

Energy gaps of Bi-Sr-Ca-Cu-O monocrystal determined by AC-susceptibility

IEEE Transactions on Magnetics (impact factor: 1.36). 12/1993; DOI:10.1109/20.281242 pp.3598 - 3600
Source: IEEE Xplore

ABSTRACT The superconducting energy gap of a
Bi2Sr2CaCu2O8+x monocrystal
has been determined, both parallel and perpendicular to the a-b plane,
from the viscous part of the AC-susceptibility (χ") obtaining values
for
2Δ||/ k B T c
≈4.8-5.2 and 2Δ2t/ k B T
c 2.7-3.4. These results are found to be in good
agreement with point contact measurements carried out on the same sample
and with those published in the literature. These results would appear
to support theories proposing two gap superconductivity in these
materials

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Keywords

a-b plane
 
gap superconductivity
 
perpendicular
 
point contact measurements
 
superconducting energy gap
 
values
 

J. Nogues