Growth, characterization and physical properties of high-quality large single crystals of Bi${}_2$Sr${}_{2-x}$La${}_x$CuO${}_6$ high-temperature superconductors

Abstract

High quality large Bi${}_2$Sr${}_{2-x}$La${}_x$CuO${}_6$(La-Bi2201) single crystals have been successfully grown by the traveling solvent floating zone technique. The samples are characterized by compositional and structural analyzes and their physical properties are investigated by magnetic susceptibility and resistivity measurements. Superconducting samples with sharp superconducting transitions are obtained covering a wide range of doping from overdoped (x<0.40), optimally-doped (x~0.40), underdoped (0.40<x<0.84) to heavily underdoped without superconducting transition (x>0.84). Crystals as large as ~40 * 2.0 * 1 mm3 are obtained for x=0.73. Sharp superconducting transition with a width less than 2 K and nearly perfect Meissner signal of superconductivity are achieved for x=0.40. The availability of the La-Bi2201 single crystals will provide an ideal system to study the physical properties, electronic structure and mechanism of high temperature superconductivity

11 pages, 5 figures

References in corpus (4)

• Scanning tunneling spectroscopy of high-temperature superconductors
• Monotonic d-wave Superconducting Gap in Optimally-Doped Bi${}_2$Sr${}_{1.6}$La${}_{0.4}$CuO${}_6$ Superconductor by Laser-Based Angle-Resolved Photoemission Spectroscopy
• Growth and Characterization of Bi${}_{2+x}$Sr${}_{2-x}$CuO${}_{6+\delta }$ Single Crystals
• Growth and post-annealing studies of La-Bi2201 single crystals