Graphene on Rh(111): STM and AFM studies

E. N. Voloshina; Yu. S. Dedkov; S. Torbruegge; A. Thissen; M. Fonin

doi:10.1063/1.4729549

Graphene on Rh(111): STM and AFM studies

Materials Science 2012-06-18 v1 Mesoscale and Nanoscale Physics

Authors: E. N. Voloshina , Yu. S. Dedkov , S. Torbruegge , A. Thissen , M. Fonin

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Abstract

The electronic and crystallographic structure of the graphene/Rh(111) moir\'e lattice is studied via combination of density-functional theory calculations and scanning tunneling and atomic force microscopy (STM and AFM). Whereas the principal contrast between hills and valleys observed in STM does not depend on the sign of applied bias voltage, the contrast in atomically resolved AFM images strongly depends on the frequency shift of the oscillating AFM tip. The obtained results demonstrate the perspectives of application atomic force microscopy/spectroscopy for the probing of the chemical contrast at the surface.

Keywords

graphene surface science

Cite

@article{arxiv.1203.2255,
  title  = {Graphene on Rh(111): STM and AFM studies},
  author = {E. N. Voloshina and Yu. S. Dedkov and S. Torbruegge and A. Thissen and M. Fonin},
  journal= {arXiv preprint arXiv:1203.2255},
  year   = {2012}
}

Comments

manuscript and supplementary information; submitted to Appl. Phys. Lett. on 01.03.2011

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