Induced polarization at a paraelectric/superconducting interface

Abstract

We examine the modified electronic states at the interface between superconducting and ferro(para)-electric heterostructures. We find that electric polarization $P$ and superconducting $\psi$ order parameters can be significantly modified due to coupling through linear terms brought about by explicit symmetry breaking at the interface. Using an effective action and a Ginzburg-Landau formalism, we show that an interaction term linear in the electric polarization will modify the superconducting order parameter $\psi$ at the interface. This also produces modulation of a ferroelectric polarization. It is shown that a paraelectric-superconductor interaction will produce an interface-induced ferroelectric polarization.

4 pages, 3 figures, Submitted to Phys. Rev. B

References in corpus (6)

• Why Some Interfaces Cannot be Sharp
• Colossal Effects in Transition Metal Oxides Caused by Intrinsic Inhomogeneities
• Magnetism in Fe-based superconductors
• Superconducting Puddles and "Colossal'' Effects in Underdoped Cuprates
• Competing Orders and Quantum Phase Fluctuations on the Low-Energy Excitations and Pseudogap Phenomena of Cuprate Superconductors
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Cited by in corpus (2)

• Electric field effect on superconductivity at complex oxide interfaces
• Strange Metals from Quantum Geometric Fluctuations of Interfaces