Dynamics and Energetics of Ge(001) Dimers


Houselt, Arie van and Gastel, Raoul van and Poelsema, Bene and Zandvliet, Harold J.W. (2006) Dynamics and Energetics of Ge(001) Dimers. Physical Review Letters, 97 (26). p. 266104. ISSN 0031-9007

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Abstract:The dynamic behavior of surface dimers on Ge(001) has been studied by positioning the tip of a scanning tunneling microscope over single flip-flopping dimers and measuring the tunneling current as a function of time. We observe that not just symmetric, but also asymmetric appearing dimers exhibit flip-flop motion. The dynamics of flip-flopping dimers can be used to sensitively gauge the local potential landscape of the surface. Through a spatial and time-resolved measurement of the flip-flop frequency of the dimers, local strain fields near surface defects can be accurately probed.
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Copyright:© 2006 The American Physical Society
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Link to this item:http://purl.utwente.nl/publications/73061
Official URL:https://doi.org/10.1103/PhysRevLett.97.266104
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