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NMR evidence for common superconducting and pseudogap phase diagrams of YBa2Cu3O7-delta and La2-xSrxCaCu2O6
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UNSPECIFIED (1996) NMR evidence for common superconducting and pseudogap phase diagrams of YBa2Cu3O7-delta and La2-xSrxCaCu2O6. PHYSICAL REVIEW B, 54 (10). R6909-R6912. ISSN 0163-1829.
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Abstract
We report ac susceptibility and O-17 nuclear-magnetic-resonance (NMR) measurements on the double-CuO2-layer La2-xSrxCaCu2O6 high-temperature superconducting cuprate (HTSC) with a T-c,T-max of 60 K. A comparison is made with Y-89 NMR measurements on YBa2Cu3O7-delta. which has a higher T-c,T-max of 93 K and Y0.8Ca0.2Ba2Cu3O7-delta with a slightly lower T-c,T-max of 87 K. We find that the hole concentration dependence of the normal-state gap and of T-c both scale with T-c,T-max, implying a universal scaled phase diagram for these two superconductors, and, by implication, for the wider class of HTSC. This suggests that the normal-state gap and the pairing mechanism may have a common origin.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Journal or Publication Title: | PHYSICAL REVIEW B | ||||
Publisher: | AMERICAN PHYSICAL SOC | ||||
ISSN: | 0163-1829 | ||||
Official Date: | 1 September 1996 | ||||
Dates: |
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Volume: | 54 | ||||
Number: | 10 | ||||
Number of Pages: | 4 | ||||
Page Range: | R6909-R6912 | ||||
Publication Status: | Published |
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