Proximity coupling of a granular film with a ferroelectric substrate and giant electroresistance effect
Abstract
We study electron transport in granular film placed above the ferroelectric substrate. We show that the conductivity of granular film depends strongly on the ferroelectric state due to screening effects that modify the Coulomb blockade in granular film. In particular, the electric current in granular film is controlled by the direction of ferroelectric polarization. We show that the ferroelectric/granular film system has a large electroresistance effect. This effect can be utilized in memory and electric-field sensor applications.
- Publication:
-
Physical Review B
- Pub Date:
- August 2014
- DOI:
- 10.1103/PhysRevB.90.054201
- arXiv:
- arXiv:1407.7719
- Bibcode:
- 2014PhRvB..90e4201U
- Keywords:
-
- 77.80.-e;
- 73.23.Hk;
- 85.50.Gk;
- 72.80.Ng;
- Ferroelectricity and antiferroelectricity;
- Coulomb blockade;
- single-electron tunneling;
- Non-volatile ferroelectric memories;
- Disordered solids;
- Condensed Matter - Disordered Systems and Neural Networks;
- Condensed Matter - Mesoscale and Nanoscale Physics;
- Condensed Matter - Materials Science
- E-Print:
- 9 pages, 9 figures