Nanoscopic phase separation and the universal transport and magnetic properties of high {Tc} superconductors
The authors have found the correlation between nanoscopic phase separation in the copper-oxygen planes of YBCO and TlBCCO and the transport and magnetic properties of these materials in the a-b planes such as: the temperature dependence of the critical current density J{sub c}(T), the temperature dependence of the superfluid density n{sub s}(T) {proportional{underscore}to} 1/{lambda}{sup 2}(T) at low temperatures, the temperature dependence of the normalized logarithmic relaxation rate S(T), and the dependence of the effective energy barrier against vortex motion on the current density U{sub eff}(J). These properties are controlled by the ratio of the amount of an underdoped filamentary phase to that of an optimally doped one.
- Research Organization:
- Univ. of Alberta, Edmonton, Alberta (CA)
- OSTI ID:
- 20015125
- Journal Information:
- International Journal of Modern Physics B, Vol. 13, Issue 29-31; Conference: Second International Conference of New Theories, Discoveries and Applications of Superconductors and Related Materials (New{sup 3}SC-2), Las Vegas, NV (US), 06/01/1999; Other Information: PBD: 20 Dec 1999; ISSN 0217-9792
- Country of Publication:
- United States
- Language:
- English
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