Gate-controlled non-volatile graphene-ferroelectric memory

Details Gate-controlled non-volatile graphene-ferroelectric memory Gate-controlled non-volatile graphene-ferroelectric memory

2009-04-08

arxiv.org/abs/0904.1326v2

Appl. Phys. Lett. 94, 163505 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 papes, 4 figures

Scientific paper

10.1063/1.3119215

In this letter, we demonstrate a non-volatile memory device in a graphene FET structure using ferroelectric gating. The binary information, i.e. "1" and "0", is represented by the high and low resistance states of the graphene working channels and is switched by controlling the polarization of the ferroelectric thin film using gate voltage sweep. A non-volatile resistance change exceeding 200% is achieved in our graphene-ferroelectric hybrid devices. The experimental observations are explained by the electrostatic doping of graphene by electric dipoles at the ferroelectric/graphene interface.

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