Abstract
Surface defects are generated by an Ar plasma on crystalline graphite. In situ scanning tunneling microscopy reveals localized defects surrounded by a R30° superstructure (Friedel’s charge oscillations) for short treatment times and long-range disordered lattices for longer treatment times. In situ X-ray photoelectron spectroscopy C 1s core-level spectra exhibit a broadening attributed to a distribution of C atoms in inequivalent sites. As implantation of heteroatoms and formation of vacancies can be ruled out, defects are attributed to stable displaced surface carbon atoms.
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81.65.Cf; 68.35.Dv; 68.37.Ef; 79.60.Ht
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Rousseau , B., Estrade-Szwarckopf , H., Thomann , AL. et al. Stable C-atom displacements on HOPG surface under plasma low-energy argon-ion bombardment. Appl Phys A 77, 591–597 (2003). https://doi.org/10.1007/s00339-002-1538-x
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DOI: https://doi.org/10.1007/s00339-002-1538-x