Dynamics and Energetics of Ge(001) Dimers

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Houselt van, Arie and Gastel van, Raoul 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.
Item Type:Article
Copyright:© 2006 The American Physical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/73061
Official URL:http://dx.doi.org/10.1103/PhysRevLett.97.266104
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