Alternative state variables for graphene transistors

This chapter provides an outlook of some important state variables used to enable graphene based nanoelectronic devices. State variables are physical representations of information used to perform information processing via memory, logic and transmission functionality. Recent advances in scalable graphene and controllable nanoribbons has provided hope for graphene based nanodevices, including more exotic devices that employ alternative state variables. This chapter will discuss a few such devices including electron charge as used in FET devices, electron spin as used in Spin FET devices, pseudospin as used in BiSFET devices, phonons as used in thermal logic and molecular charge as used in atomic mechanical switches.