Date/time: 3:00 PM, Th, Dec 9 2010.
Room: Sumwalt 102

Speaker: Yuriy Semenov, North Carolina State University

Title: Electric field effects in ferromagnet-graphene composite structures

Abstract:
A non-volatile magnetic switch is proposed by utilizing the unique
properties of graphene-ferromagnet composite structures. The basic mechanism
relies on the role of graphene in mediating and modulating the effective
exchange bias between adjacent magnetic layers, which can lead to
electrically controlled rotation of magnetic bits. Readout of magnetization
states is also achieved electrically through the magnetoresistance effect in
the graphene channel. The proposed switch can be used to realize both the
memory and programmable logic elements. Theoretical estimates illustrate the
feasibility of the concept as well as its potential advantage of low power
consumption ~ 10^(-19) J for the intrinsic switching operation.