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Investigating the Relationship Between Atomic Structure and Carrier Depletion at [001] tilt Grain Boundaries in Ybco

Published online by Cambridge University Press:  10 February 2011

N. D. Browning  and
J. P. Buban
N. D. Browning
Affiliation:
Department of Physics (M/C 273), University of Illinois at Chicago, 845 W. Taylor (MWC 273), Chicago, IL 60607–7059.USA
J. P. Buban
Affiliation:
Department of Physics (M/C 273), University of Illinois at Chicago, 845 W. Taylor (MWC 273), Chicago, IL 60607–7059.USA
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Abstract

Recent theoretical analyses [1] have suggested that the origin of the reduced Jc at grain boundaries in high-Tc superconductors may be band bending, which results in the depletion of mobile charge carriers at the boundaries. For this to occur in these p-type superconductors there must, by definition, be a high density of localized donor states in the boundary plane. Here we report a “structural unit” analysis of [0011 tilt grain boundaries in YBa2Cu 3O7-δ (YBCO) that indicates there may be a simple structural origin for such localized donor states.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 574: Symposia BB – Multicomponent Oxide Films for Electronics , 1999 , 89
Copyright
Copyright © Materials Research Society 1999

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