Real-Time Imaging of K atoms on Graphite: Interactions and Diffusion

Details Real-Time Imaging of K atoms on Graphite: Interactions and Diffusion Real-Time Imaging of K atoms on Graphite: Interactions and Diffusion

2010-09-30

arxiv.org/abs/1009.6037v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

Scanning tunneling microscopy (STM) at liquid helium temperature is used to image potassium adsorbed on graphite at low coverage (~0.02 monolayer). Single atoms appear as protrusions on STM topographs. A statistical analysis of the position of the atoms demonstrates repulsion between adsorbates, which is quantified by comparison with molecular dynamics simulations. This gives access to the dipole moment of a single adsorbate, found to be 10.5 Debye. Time lapse imaging shows that long range order is broken by thermally activated diffusion, with a 32 meV barrier to hopping between graphite lattice sites.

Affiliated with

Also associated with

No associations

Rating

Real-Time Imaging of K atoms on Graphite: Interactions and Diffusion 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 Real-Time Imaging of K atoms on Graphite: Interactions and Diffusion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Real-Time Imaging of K atoms on Graphite: Interactions and Diffusion will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-242527