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Current-voltage characteristics of a -wide -tilt grain-boundary junction at temperatures from 7 to . Inset (left): characteristic voltage vs temperature. Inset (right): atomic force microscopy image of unpatterned -tilt grain boundary.
Voltage noise as a function of frequency for -wide -tilt grain-boundary junction at temperatures from 7 to . Junction voltages were set equal to the characteristic voltages for each temperature.
Voltage noise at a frequency of vs square of the dc voltage for -tilt grain-boundary junction at temperatures ranging from 45 to . Dashed lines are the fitting curves according to Eq. (1).
Summary of noise data for -tilt bicrystal junctions at temperature .
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