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The effect of a vacancy on the STM image of graphite
Author(s) -
Soto M. R.
Publication year - 1988
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.1988.tb01449.x
Subject(s) - vacancy defect , graphite , condensed matter physics , charge (physics) , perturbation (astronomy) , materials science , molecular physics , chemical physics , atomic physics , chemistry , physics , quantum mechanics , metallurgy
SUMMARY Theoretical studies have been done on graphite with a vacancy using the extended Huckel tight‐binding (EHTB) method. The results of the singly‐ and doubly‐layered samples show that there is an unexpected distance dependence of the charge density directly over the vacancy. Furthermore, the vacancy acts as a perturbation to distinguish two sublattices which exist in pristine graphite and it creates a charge enhancement in the atoms directly surrounding it.