NMR evidence for common superconducting and pseudogap phase diagrams of YBa2Cu3O7-delta and La2-xSrxCaCu2O6
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 0163-1829Full text not available from this repository.
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|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||PHYSICAL REVIEW B|
|Publisher:||AMERICAN PHYSICAL SOC|
|Official Date:||1 September 1996|
|Number of Pages:||4|
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