H. N. Bachman,
V. F. Mitrovic,
A. P. Reyes,
W. P. Halperin, M. Eschrig, J. A. Sauls,
A. Kleinhammes, P. Kuhns and W. G. Moulton
Comments: 4 pages with 4 figures
Journals: Physical Review B 60, 7591 (1999) [DOI] [PDF]
The electronic spin susceptibility of YBa2Cu3O6.95 has been measured with high precision up to 24 T with 17O nuclear magnetic resonance. Its temperature dependence can be accounted for by superconducting fluctuations that result in a smooth crossover from the normal to the vortex liquid state. A magnetic-field-temperature phase diagram for this crossover has been established having strong upward curvature.