Dynamics and energetics of Ge(001) dimers

Zandvliet, H. (Speaker), van Houselt, A. (Contributor), Raoul van Gastel (Contributor), Poelsema, B. (Contributor)

Activity: Talk or presentationOral presentation


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.
Period27 Mar 2007
Event titleDPG Frühjahrstagung 2007 Regensburg: (DPG Spring Meeting)
Event typeConference
LocationRegensburg, Germany
Degree of RecognitionInternational


  • METIS-245095