Journal
JOURNAL OF APPLIED PHYSICS
Volume 97, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1828219
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Leakage current of Pt/(Ba0.7Sr0.3)TiO3 (BST)/YBa2Cu3O7-delta capacitors on a (001) SrTiO3 substrate was studied. By modeling a low-dielectric constant layer, a so-called dead layer, between the Pt/BST interface as a parasitic capacitor in series with the bulk layer capacitor, the leakage current of Pt/BST interface was well analyzed based on the modified Schottky emission equation. Furthermore, a two-step schematic energy band diagram is proposed to explain the carrier transport through the Pt/BST interface. (C) 2005 American Institute of Physics.
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