The Normal State Resistivity of Grain Boundaries in YBa2Cu3O7-delta

(2) LG Electronics Institute of Technology; B. Oh (2); Cambridge; E.J. Tarte (1); G. Burnell (1); J.E. Evetts (1); J.H.T. Ransley (1); J.I. Kye (2); K.G. Sandeman (1); Korea)

arxiv: cond-mat/0311386 · v1 · submitted 2003-11-17 · ❄️ cond-mat.mtrl-sci · cond-mat.str-el· cond-mat.supr-con

The Normal State Resistivity of Grain Boundaries in YBa2Cu3O7-delta

J.H.T. Ransley (1) , S.H. Mennema (1) , K.G. Sandeman (1) , G. Burnell (1) , J.I. Kye (2) , B. Oh (2) , E.J. Tarte (1) , J.E. Evetts (1)

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M.G. Blamire (1) ((1) IRC in Superconductivity Cambridge UK (2) LG Electronics Institute of Technology Seoul Korea)

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classification ❄️ cond-mat.mtrl-sci cond-mat.str-elcond-mat.supr-con

keywords grainboundariesboundaryresultsyba2cu3o7-deltaableaboveaccurate

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Using an optimized bridge geometry we have been able to make accurate measurements of the properties of YBa2Cu3O7-delta grain boundaries above Tc. The results show a strong dependence of the change of resistance with temperature on grain boundary angle. Analysis of our results in the context of band-bending allows us to estimate the height of the potential barrier present at the grain boundary interface.

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The Normal State Resistivity of Grain Boundaries in YBa2Cu3O7-delta

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