Translational and bond-orientational order in the vortex lattice of the high-Tc superconductor Bi2.1Sr1.9Ca0.9Cu2O8+δ

D. G. Grier; C. A. Murray; C. A. Bolle; P. L. Gammel; D. J. Bishop; D. B. Mitzi; A. Kapitulnik

doi:10.1103/PhysRevLett.66.2270

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Translational and bond-orientational order in the vortex lattice of the high-Tc superconductor Bi2.1Sr1.9Ca0.9Cu2O8+δ

D. G. Grier, C. A. Murray, C. A. Bolle, P. L. Gammel, D. J. Bishop, D. B. Mitzi, A. Kapitulnik

DOI 10.1103/PhysRevLett.66.2270 · Physical Review Letters

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Abstract

We have investigated the microscopic ordering of the flux lattice in the mixed state of Bi2.1Sr1.9Ca0.9Cu2O8+δ near Hc1 by image analysis of Bitter-decorated samples. We observe a dramatic transition from strong isotropic disorder to hexatic order with increasing magnetic field. This transition occurs at a lower applied magnetic field for samples which are annealed in oxygen.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2.1Sr1.9Ca0.9Cu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	88.5	Pressure not reported	onset
Bi2.1Sr1.9Ca0.9Cu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	86	Pressure not reported	onset