Project Details

Description

-----------------Technical abstract--------------------- Graphene, the recently isolated two dimensional crystal of carbon,possesses extraordinary electronic properties arising from a low energyexcitation spectrum which mimics ultra relativistic particles. Thismakes it possible to achieve high quality field-effect transistors andto observe the quantum Hall effect at room-temperature. The object ofthis work is to access the intrinsic properties of graphene by isolatingit from the environment and to explore the emergence of new physicalphenomena in response to the controlled introduction of chemical or mechanical perturbations. We will seek to understand and minimizeenvironmental effects on the electronic properties by exploring theinfluence of various substrates as well as that of removing thesubstrate altogether. We will explore the role of interactions,boundaries, magnetic field and dopants on the quasiparticle spectrum insearch of emergent phases and new physical properties. We willinvestigate the feasibility of fabricating graphene nano-devices basedon these properties. The primary experimental probes in this projectinclude scanning tunneling microscopy and spectroscopy atomic forcemicroscopy and magneto-transport. Work on this project will be carriedout with the active participation of students at the undergraduate andgraduate level and with post doctoral fellows. ----------Non-technical abstract------------------------ The recent discovery of graphene, a two-dimensional crystal consistingof a single atomic plane of graphite, gives access to extraordinaryelectronic properties arising from charge carriers that mimicultra-relativistic particles. Because of the low dimensionality and thepossibility of attaining charge transport with exceptionally highcarrier mobility, graphene holds the promise of becoming the buildingblock for a new generation of nanoelectronics devices. The goal of thisproject is to access the intrinsic properties of graphene by isolatingit from the environment and to explore the emergence of new physicalphenomena and new phases of matter in response to the controlledintroduction of chemical or mechanical perturbations. We will explorethe feasibility of fabricating graphene nano-devices based on theseproperties. The primary experimental probes will include scanningtunneling microscopy and spectroscopy, atomic force microscopy andmagneto-transport. Work on this project will be carried out with theactive participation of students at the undergraduate and graduatelevel. Work on this project will be carried out with the activeparticipation of students at the undergraduate, graduate and postdoctoral levels. They will receive training in cutting edge research andin the use of state of the art equipment that will prepare them forfilling demanding technical and research positions.
StatusFinished
Effective start/end date7/1/096/30/11

Funding

  • National Science Foundation (NSF)

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