Effect of hole doping on the London penetration depth in Bi2.15Sr1.85CaCu2O8+δ and Bi2.1Sr1.9Ca0.85Y0.15Cu2O8+δ
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Peer-reviewed
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Authors
Anukool, W
Barakat, S
Panagopoulos, C
Cooper, JR
Abstract
We report measurements of ac susceptibility and hence the in-plane London penetration depth on the same samples of Bi2.15Sr1.85CaCu2O8+δ and Bi2.1Sr1.9Ca0.85Y0.15Cu2O8+δ for many values of the hole concentration (p). These support the scenario in which the pseudogap weakens the superconducting response only for p≲0.19.
Description
Keywords
bismuth compounds, calcium compounds, doping profiles, high-temperature superconductors, magnetic susceptibility, penetration depth (superconductivity), strontium compounds, superconducting energy gap, yttrium compounds, HIGH-T-C, THERMOELECTRIC-POWER, SINGLE-CRYSTALS, SUPERCONDUCTORS, BI2SR2CACU2O8+DELTA, RESISTIVITY, INPLANE, DENSITY
Journal Title
Physical Review B: Condensed Matter and Materials Physics
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Journal ISSN
1098-0121
1550-235X
1550-235X
Volume Title
80
Publisher
American Physical Society
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Sponsorship
We acknowledge funding from the EPSRC (U.K.), for the experimental facilities in Cambridge, and further financial support from The Royal Society, EURYI, and MEXT-CT-2006-039047. W.A. was supported by the Development and Promotion of Science and Technology Talents Project (D.P.S.T.), Thailand.