H. Hilgenkamp et J. Mannhart, SUPERCONDUCTING AND NORMAL-STATE PROPERTIES OF YBA2CU3O7-DELTA-BICRYSTAL GRAIN-BOUNDARY JUNCTIONS IN THIN-FILMS, Applied physics letters, 73(2), 1998, pp. 265-267
A model, based on universal properties of high-T-c superconductors onl
y, is presented for the transport characteristics of grain boundaries
in these materials. The model accounts for the superconducting as well
as for the normal-state transport properties observed in a comprehens
ive study of YBa2Cu3O7-delta [001]-tilt bicrystalline grain boundaries
with varying misorientation angles and of two different symmetries. (
C) 1998 American Institute of Physics. [S0003-6951 (98)02628-X].