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Updated: Aug 9, 2026

Assessment of Boron Doped Diamond Electrode Quality and Application to In Situ Modification of Local pH by Water Electrolysis
Published on: January 6, 2016
Electrostatic tuning of the hole density in NdBa2Cu3O(7-delta) films and its effect on the Hall response
S Gariglio1, C H Ahn, D Matthey
1DPMC, University of Geneva, 24 Quai Ernest Ansermet, 1211 Geneva 4, Switzerland.
Abstract:
We have used the ferroelectric field effect in heterostructures based on superconducting NdBa2-Cu(3)O(7-delta) and ferroelectric Pb(Zr0.2Ti0.8)O3 to electrostatically modulate in a reversible and nonvolatile fashion the hole carrier density of the superconducting layer. Reversing the ferroelectric polarization induces a constant relative change in the resistivity and Hall constant of 9% and 6%, respectively, at all temperatures above the superconducting transition. The cotangent of the Hall angle displays a T2 dependence with a slope that increases as the carrier density is reduced.
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