Abstract
We find that resistive hysteresis accompanies vortex lattice melting in Bi2Sr2CaCu2O8+° single crystals, together with a sharp drop of the resistance with decreasing temperature. The melting transition temperatureT m was current dependent, indicating that current drives the vortex system out of equilibrium. AboveT m , we find a second sharp feature in the data which we interpret to signify the decoupling transition of the vortex line liquid. Our measurements show nonlocal conductivity in the vortex liquid phase, which correlates with the strength of interlayer vortex coupling. Finally, we review existing literature on vortex lattice melting in BSCCO. While the melting curve varies significantly for different samples, the measurements appear to probe the same physical process in all cases.
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Keener, C.D., Trawick, M.L., Ammirata, S.M. et al. Vortex lattice melting and interlayer coupling in Bi2Sr2CaCu2O8+δ crystals. Czech J Phys 46 (Suppl 6), 3211–3217 (1996). https://doi.org/10.1007/BF02548132
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DOI: https://doi.org/10.1007/BF02548132