Abstract
We have used the ferroelectric field effect in heterostructures based on superconducting and ferroelectric 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 and , respectively, at all temperatures above the superconducting transition. The cotangent of the Hall angle displays a dependence with a slope that increases as the carrier density is reduced.
- Received 24 September 2001
DOI:https://doi.org/10.1103/PhysRevLett.88.067002
©2002 American Physical Society