Image potential states as quantum probe of graphene interfaces

Details Image potential states as quantum probe of graphene interfaces Image potential states as quantum probe of graphene interfaces

2010-01-18

arxiv.org/abs/1001.3058v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Accepted for publication in New Journal of Physics

Scientific paper

Image potential states (IPSs) are electronic states localized in front of a surface in a potential well formed by the surface projected bulk band gap on one side and the image potential barrier on the other. In the limit of a two-dimensional solid a double Rydberg series of IPSs has been predicted which is in contrast to a single series present in three-dimensional solids. Here, we confirm this prediction experimentally for mono- and bilayer graphene. The IPSs of epitaxial graphene on SiC are measured by scanning tunnelling spectroscopy and the results are compared to ab-initio band structure calculations. Despite the presence of the substrate, both calculations and experimental measurements show that the first pair of the double series of IPSs survives, and eventually evolves into a single series for graphite. Thus, IPSs provide an elegant quantum probe of the interfacial coupling in graphene systems.

Affiliated with

Also associated with

No associations

Rating

Image potential states as quantum probe of graphene interfaces does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Image potential states as quantum probe of graphene interfaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image potential states as quantum probe of graphene interfaces will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-661312