Correlation between Tc and the hole density at Cu and Oxygen
β Scribed by G.-q. Zheng; E. Yanase; K. Ishida; Y. Kitaoka; K. Asayama; Y. Kodama; S. Endo
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 145 KB
- Volume
- 185-189
- Category
- Article
- ISSN
- 0921-4534
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β¦ Synopsis
Dependence of NQR frequency,
v Q(CU) on pressure up to 1.3GPs is reported for Lal.85Sr0.15CuO 4 and YBa2Cu40 8. Correlations
π SIMILAR VOLUMES
Correlation between superconducting T~ and hole concentration was investigated in the Bi2Sr2CaCu208+~ system. The hole concentration was varied by substituting cations with different valences for Sr or Ca. In order to increase the hole concentration, some samples were annealed at 430Β°C in 250 bar of
An approximation for the correIation energy of the electron gas is derived (employing a direct modelling of the Coulomb hole) for the pair distribution function: ec(rs) = -0.303&, + 1\_108) rydberg. It is of the same form as the expressions of Wigner and of McWeeny.