Dynamics and energetics of Ge(001) dimers

Description

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.

Period	27 Mar 2007
Event title	DPG Frühjahrstagung 2007 Regensburg: (DPG Spring Meeting)
Event type	Conference
Organiser	Deutsche Physikalische Gesellschaft
Location	Regensburg, GermanyShow on map
Degree of Recognition	International