Growth and Characterization of Bi${}_{2+x}$Sr${}_{2-x}$CuO${}_{6+\delta }$ Single Crystals

Abstract

High-quality Bi${}_{2+x}$Sr${}_{2-x}$CuO${}_{6+\delta }$(0$<$x$\le$0.5) single crystals have been grown successfully using the travelling-solvent floating-zone(TSFZ) technique. The samples with $x>$ 0.05 are in the underdoped level. The structure of these crystals was investigated by X-ray diffraction. The evolution of c-axis lattice parameters with varied \emph{x} is displayed, which is strongly associated with the behavior of $T_c$. The crystals exhibit superconducting transitions with $T_c=9$ to 0.8 K for the samples with $x=0.05$ to 0.20, while for samples with $x=0.25$ and above no superconductivity was discovered down to 1.6 K. The resistivity of samples with $x$=0.31, 0.40 and 0.50 exhibits a drastic divergence as temperature approaches 0 K.

arXiv comment6 pages,7 figures. submitted to Journal of Crystal Growth

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• Growth and post-annealing studies of La-Bi2201 single crystals
• Vortex phase diagram and temperature-dependent second-peak effect in overdoped Bi${}_2$Sr${}_2$CuO${}_{6+\delta }$ crystals
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• Planckian Dissipation and non-Ginzburg-Landau Type Upper Critical Field in Bi2201
• Magnetic phase diagram of the layered superconductor Bi{2+x}Sr{2-x}CuO{6+δ} (Bi2201) with Tc~7 K
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