Direct Observation of Melting of the Vortex Solid inBi2Sr2CaCu2O8+δSingle Crystals

Oral, Ahmet
Bending, S. J.
Kaya, I. I.
Ooi, S.
Tamegai, T.
Henini, M.
A scanning Hall probe microscope has been used to directly observe the vortex lattice melting transition in Bi2Sr2CaCu2O8+delta single crystals. Below the melting line, the system settles into a fairly well-ordered vortex solid which undergoes pronounced rotations as the field is increased due to incommensurability effects. Vortex contrast is lost abruptly and discontinuously at the melting line consistent with a first order transition. Vortex profiles appear to be strongly broadened by two-dimensional fluctuations which grow much stronger as the melting line is approached from below, suggesting that melting and decoupling are almost simultaneous.
Physical Review Letters


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Citation Formats
A. Oral, S. J. Bending, I. I. Kaya, S. Ooi, T. Tamegai, and M. Henini, “Direct Observation of Melting of the Vortex Solid inBi2Sr2CaCu2O8+δSingle Crystals,” Physical Review Letters, pp. 3610–3613, 1998, Accessed: 00, 2020. [Online]. Available: