Superconducting properties of ultrathin Bi2Sr2CaCu2O8+x single crystals

Abstract

We use Ar-ion milling to thin Bi2212 single crystals down to a few nanometers or one-to-two (CuO2)2 layers. With decreasing the thickness, superconducting transition temperature gradually decreases to zero and the in-plane resistivity increases to large values indicating the existence of a superconductor-insulator transition in ultrathin Bi2212 single crystals.

arXiv comment17 pages, 6 figures, to appear in J. Appl. Phys. 98(3) 2005

References in corpus (5)

• Imaging the granular structure of high-Tc superconductivity in underdoped Bi2Sr2CaCu2O8+x
• Suppressed Superconductivity of the Surface Conduction Layer in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+x}$ Single Crystals Probed by {\it c}-Axis Tunneling Measurements
• Superconducting critical current of a single Cu2O4-plane in Bi2Sr2CaCu2O8+x single crystal
• Controlling the Intrinsic Josephson Junction Number in a $\mathbf{B}{\mathbf{i}}_2\mathbf{S}{\mathbf{r}}_2\mathbf{CaC}{\mathbf{u}}_2{\mathbf{O}}_{8+\delta }$ Mesa
• Suppression of the superconducting energy gap in intrinsic Josephson junctions of $\mathbf{B}{\mathbf{i}}_2\mathbf{S}{\mathbf{r}}_2\mathbf{CaC}{\mathbf{u}}_2{\mathbf{O}}_{8+\delta }$ single crystals