Depairing field, onset temperature and the nature of the transition in cuprates

Abstract

The depairing (upper critical) field $H_{c2}$ in hole-doped cuprates has been inferred from magnetization curves $M$-$H$ measured by torque magnetometry in fields $H$ up to 45 T. We discuss the implications of the results for the pair binding energy, the Nernst onset temperature, fluctuations and the nature of the Meissner transition at $T_c$.

arXiv comment4 pages, 5 figs., proc. M2S-HTSC-VIII, Dresden 2006, Physica (in press)

References in corpus (6)

• The Nernst effect in high-$T_c$ superconductors
• The onset of the vortex-like Nernst signal above Tc in La_{2-x}Sr_xCuO_4 and Bi_2Sr_{2-y}La_yCuO_6
• Field-enhanced diamagnetism in intense magnetic field in the pseudogap state of the cuprate $\rm Bi_2Sr_2CaCu_2O_{8+δ}
• Strongly nonlinear magnetization above $T_c$ in $\mathrm{B}{\mathrm{i}}_2\mathrm{S}{\mathrm{r}}_2\mathrm{CaC}{\mathrm{u}}_2{\mathrm{O}}_{8+\delta }$
• Superconducting Magnetization above the Irreversibility Line in Tl2Ba2CuO6
• On the magnetization of two-dimensional superconductors

Cited by in corpus (2)

• Diamagnetism and Cooper pairing above $T_c$ in cuprates
• High Field Studies of Superconducting Fluctuations in High-T_c Cuprates: Evidence for a Small Gap distinct from the Large Pseudogap