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Using an atomic force microscope (AFM), we successfully ploughed micron size planar constriction type junctions on YBa2Cu3O7-x thin films. The 100 nanometer (nm) thin films are deposited on MgO substrates by an inverted cylindrical magnetron (ICM) sputtering technique. The films are then patterned into 8-10 micron size strips, using photolithography and dry etching. A diamond coated tip was used with...
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