Superconducting critical current of a single Cu2O4 plane in a Bi2Sr2CaCu2O8+x single crystal
Journal article, 2005

By feeding current into the topmost Cu2O4 layer of a mesa etched into the surface of a Bi2Sr2CaCu2O8+x (BSCCO) single crystal, we measured its superconducting critical value from a sharp upturn or break in the current-voltage characteristics of the mesa. From this, we estimate the sheet critical current density of a single Cu2O4 plane to be similar to 0.3-0.7 A/cm at 4.5 K, corresponding to the bulk current density of 2-5 MA/cm(2). These values are among the largest ever measured for BSCCO single crystals, thin films and tapes, and we argue that they represent the true intrinsic values of the material.

Author

Lixing You

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Avgust Yurgens

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Dag Winkler

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 71 22 224501-

Subject Categories

Physical Sciences

DOI

10.1103/PhysRevB.71.224501

More information

Created

10/7/2017