Superconducting critical current of a single Cu2O4 plane in a Bi2Sr2CaCu2O8+x single crystal
Artikel i vetenskaplig tidskrift, 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.

Författare

Lixing You

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Avgust Yurgens

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Dag Winkler

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 71 224501-

Ämneskategorier

Fysik

DOI

10.1103/PhysRevB.71.224501