Jr. Thompson et al., VORTEX FLUCTUATIONS, MAGNETIC PENETRATION DEPTH, AND HC2 IN HG-BASED AND TL-BASED HIGH-T(C) SUPERCONDUCTORS, Physical review. B, Condensed matter, 48(18), 1993, pp. 14031-14034
The presence of strong vortex fluctuation effects in two families of l
ayered high-temperature superconductors (HgBa2CuO4+delta and Tl2Ca2Ba2
Cu3O10+delta) is established from experimental studies of the equilibr
ium magnetization in the mixed state using the theory of Bulaevskii et
al. Detailed information is obtained within the framework of this the
ory on the London penetration depth lambda(ab), upper critical field H
(c2), and Ginzburg-Landau parameter kappa(ab) (With magnetic field per
pendicular to the copper oxide planes) of these materials.