Field effect and ferroelectric field effect in correlated oxide films

D. Matthey; S. Gariglio; C. H. Ahn; Jean-Marc Triscone

doi:10.1117/12.455539

7 November 2002 Field effect and ferroelectric field effect in correlated oxide films

D. Matthey, S. Gariglio, C. H. Ahn, Jean-Marc Triscone

Proceedings Volume 4811, Superconducting and Related Oxides: Physics and Nanoengineering V; (2002) https://doi.org/10.1117/12.455539
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

We repoert on ferroelectric field effect experiments in correlated oxide films, demonstrating that a reversible, nonvolatile change in the electronic properties can be obtained upon reversing the ferroelectric polarization in epitaxial heterostructures consisting of ferroelectric Pb(Zr_0.2Ti_0.8) O₃ and metallic or superconducting oxide layers. In particular, we show that a T_c modulation of 7 K can be obtained in very thin (~20 Å) films of high T_c superconductors. We also discuss conventional field effect experiments, where we have used a SrTiO₃ gate insulator to modulate the electronic properties of a thin NdBa₂Cu₃O_7-Δ film. In this device, the dielectric constant of SrTiO₃ reaches a value of 2800 at 18 K. The polarization obtained is a few μC/cm², which induces a modulation of the resistivity of the NdBa₂Cu₃O_7-δ layer of ~9%.

Citation Download Citation

D. Matthey, S. Gariglio, C. H. Ahn, and Jean-Marc Triscone "Field effect and ferroelectric field effect in correlated oxide films", Proc. SPIE 4811, Superconducting and Related Oxides: Physics and Nanoengineering V, (7 November 2002); https://doi.org/10.1117/12.455539

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