Real-Time Observation of the Dynamics of Single Pb Atoms on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Si</mml:mi>...

Abstract

The very early stages of Pb deposition on $\mathrm{Si}(111)\ensuremath{-}(7\ifmmode\times\else\texttimes\fi{}7)$ surfaces have been investigated in real time by scanning tunneling microscopy. The combination of variable temperature scanning with unusual very long periods of imaging time have enabled us to observe that single Pb atoms are highly mobile within each half $(7\ifmmode\times\else\texttimes\fi{}7)$ unit cell. Individual jumps of single atoms between different half cells have been resolved as well as the formation of atom pairs as a result. An activation energy of $0.64\ifmmode\pm\else\textpm\fi{}0.07\mathrm{eV}$ has been measured for the diffusion of single atoms between different half cells.

Keywords

Atom (system on chip)Scanning tunneling microscopePhysicsDiffusionEnergy (signal processing)CrystallographyMaterials scienceAtomic physicsAnalytical Chemistry (journal)Condensed matter physicsChemistryThermodynamicsComputer scienceQuantum mechanics

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Publication Info

Year: 1996
Type: article
Volume: 76
Issue: 5
Pages: 799-802
Citations: 133
Access: Closed

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Real-Time Observation of the Dynamics of Single Pb Atoms on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Si</mml:mi><mml:mo>(</mml:mo><mml:mn>111</mml:mn><mml:mo>)</mml:mo><mml:mo>−</mml:mo><mml:mo>(</mml:mo><mml:mn>7</mml:mn><mml:mo>×</mml:mo><mml:mn>7</mml:mn><mml:mo>)</mml:mo></mml:math>by Scanning Tunneling Microscopy

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APA Style

                            
                                
                                    José M. Gómez‐Rodríguez, 
                                
                                    J. J. Sáenz, 
                                
                                    A. M. Baró
                                
                                et al.
                            
                            (1996). 
                            Real-Time Observation of the Dynamics of Single Pb Atoms on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Si</mml:mi><mml:mo>(</mml:mo><mml:mn>111</mml:mn><mml:mo>)</mml:mo><mml:mo>−</mml:mo><mml:mo>(</mml:mo><mml:mn>7</mml:mn><mml:mo>×</mml:mo><mml:mn>7</mml:mn><mml:mo>)</mml:mo></mml:math>by Scanning Tunneling Microscopy. 
                            Physical Review Letters
                            , 76
                            (5)
                            , 799-802.
                            https://doi.org/10.1103/physrevlett.76.799
                        

Identifiers

DOI: 10.1103/physrevlett.76.799