Proximity coupling of granular film with ferroelectric substrate and giant electro-resistance effect

Abstract

We study electron transport in granular film placed above the ferroelectric substrate. We show that the conductivity of granular film strongly depends on the ferroelectric state due to screening effects which 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 electro-resistance effect. This effect can be utilized in memory and electric field sensor applications.

9 pages, 9 figures

References in corpus (4)

• Electroresistance effects in ferroelectric tunnel barriers
• Theory of a field effect transistor based on semiconductor nanocrystal array
• Interplay of ferroelectricity and single electron tunneling
• Coulomb gap triptych in a periodic array of metal nanocrystals

Cited by in corpus (4)

• Electric field control of magnetic properties and magneto-transport in composite multiferroics
• Competition of the Coulomb and hopping based exchange interactions in granular magnets
• Influence of image forces on the interlayer exchange interaction in magnetic tunnel junctions with ferroelectric barrier
• Time-dependent exchange creates the time-frustrated state of matter