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Origin of weak-link behavior of grain boundaries in superconducting cuprates and pnictides
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10.1063/1.3367723
/content/aip/journal/apl/96/12/10.1063/1.3367723
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/12/10.1063/1.3367723
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Below the dislocation core as shown in the inset, where the expansion of the lattice below the dislocation core in the direction perpendicular to the boundary is clearly seen, the strain can be fitted to the 1/y dependence predicted by Eq. (2) for . The 1% strain level is reached between the fifth and the tenth row below the dislocation. The inset is reproduced from Ref. 7.

Image of FIG. 2.
FIG. 2.

The tensile strain , pairing potential V and order parameter across a grain boundary in the vicinity of a dislocation core. Pairing is suppressed by strain in a region whose thickness across the boundary is a few times larger than the coherence length. A finite order parameter is induced in by the proximity effect with the banks .

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/content/aip/journal/apl/96/12/10.1063/1.3367723
2010-03-23
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Origin of weak-link behavior of grain boundaries in superconducting cuprates and pnictides
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/12/10.1063/1.3367723
10.1063/1.3367723
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