Superconducting critical current of a single Cu2O4-plane in Bi2Sr2CaCu2O8+x single crystal

Abstract

By feeding current into the topmost $\mathrm{C}{\mathrm{u}}_2{\mathrm{O}}_4$-layer of a mesa etched into the surface of a $\mathrm{B}{\mathrm{i}}_2\mathrm{S}{\mathrm{r}}_2\mathrm{CaC}{\mathrm{u}}_2{\mathrm{O}}_{8+\mathrm{x}}$ (BSCCO) single crystal, we measured its superconducting critical value from a sharp upturn or break in current-voltage characteristics of the mesas. From this, we estimate the sheet critical current density of a single $\mathrm{C}{\mathrm{u}}_2{\mathrm{O}}_4$ plane to be $\sim$\ 0.3-0.7 A/cm at 4.5 K, corresponding to the bulk current density of $2-5MA/c{\mathrm{m}}^2$. These values are among the largest ever measured for BSCCO single crystals, thin films and tapes.

arXiv comment17 pages, 6 figures. submitted to PRB

References in corpus (4)

• Interlayer tunneling spectroscopy of Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$: a look from inside on the doping phase diagram of high $T_c$ superconductors
• Reply to the "Comment on 'Intrinsic tunneling spectra of Bi_2(Sr_{2-x}La_x)CuO_6' "
• Progressive evolution of tunneling characteristics of in-situ fabricated intrinsic Josephson junctions in Bi_2Sr_2CaCu_2O_{8+delta} single crystals
• 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

Cited by in corpus (7)

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• Comparative study of macroscopic quantum tunneling in Bi_2Sr_2CaCu_2O_y intrinsic Josephson junctions with different device structures
• Quantum cascade phenomenon in natural atomic superlattices formed in Bi2Sr2CaCu2O8 single crystals
• A single intrinsic Josephson junction with double-sided fabrication technique
• Superconducting properties of ultrathin Bi2Sr2CaCu2O8+x single crystals
• Superconducting vortex-charge measurement using cavity electromechanics
• Nonequilibrium probe of paired electron pockets in the underdoped cuprates