YBCO/BTO/YBCO heterostructures exhibit suppressed and inhomogeneous superconductivity (resistive Tc ~75 K, magnetic Tc ~55 K) relative to single-layer YBCO, linked mainly to oxygen deficiency and interface roughness.
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Ferroelectric--Superconducting Interaction in Epitaxial YBa2Cu3O7-{\delta}/BaTiO3 Films
YBCO/BTO/YBCO heterostructures exhibit suppressed and inhomogeneous superconductivity (resistive Tc ~75 K, magnetic Tc ~55 K) relative to single-layer YBCO, linked mainly to oxygen deficiency and interface roughness.