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BiFeO3 (BFO)/YBCO heterostructures are fabricated on (001)-oriented SrTiO3 substrates. The transport properties of BFO/YBCO heterostructures with Au and YBCO top electrode are investigated. The Au/BFO/YBCO heterostructures show obvious rectification effect. The current through Au/BFO/YBCO heterostructures at positive bias is mainly bulk-limited space-charge-limited current (SCLC) at temperatures from...
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