Contrast reversal and shape changes of atomic adsorbates measured with scanning tunneling microscopy

Physical Review Letters

Volumn 92, Issue 20, 2004, Pages

  Calleja, F ^a   Arnau, A ^b   Hinarejos, J J ^a   De Parga, A L Vázquez ^a   Hofer, W A ^c   Echenique, P M ^b,d   Miranda, R ^a  

^a UNIVERSIDAD AUTÓNOMA DE MADRID   (Spain)

^b UNIVERSITY OF THE BASQUE COUNTRY UPV EHU   (Spain)

^c UNIVERSITY OF LIVERPOOL   (United Kingdom)

^d DONOSTIA INTERNATIONAL PHYSICS CENTER DIPC   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

ADSORPTION; COMPUTER SIMULATION; LOW ENERGY ELECTRON DIFFRACTION; MATHEMATICAL MODELS; PROBABILITY DENSITY FUNCTION; SCANNING TUNNELING MICROSCOPY; ULTRAHIGH VACUUM;

LOCAL DENSITY OF STATES (LDOS); SURFACE LAYERS; TUNNELING CURRENT; ULTRAHIGH VACCUM (UHV) CHAMBERS;

RUTHENIUM;

EID: 18344418439     PISSN: 00319007     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevLett.92.206101     Document Type: Article

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26. A perfect O (2 × 2) structure is static at 300 K over many minutes. The mobility of oxygen atoms at the edge of the islands, however, is greatly enhanced when vacancies are present The atoms are seen to perform jumps at a rate comparable with the scanning frequency. In many cases their disappearance from the image correlates with a reversal in the contrast