Atomic seesaws


Houselt, Arie van and Poelsema, Bene and Zandvliet, Harold J.W. (2010) Atomic seesaws. Journal of Physics: Condensed matter, 22 (26). p. 264004. ISSN 0953-8984

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Abstract:The dynamics of two types of atomic seesaws are studied by open feedback loop scanning tunneling microscopy. The first type of atomic seesaw is a regular Ge dimer of the dimer reconstructed Ge(001) surface and the second type of atomic seesaw is a dimer located on the ridges of Au induced nanowires on a Ge(001) surface. On the bare Ge(001) surface the flip-flop motion of the dimers is induced by phasons, which perform a one-dimensional random walk along the substrate dimer rows. The phasons on the Au induced nanowires ridges are pinned and therefore only a limited number of dimers exhibit flip-flop behavior for the Au/Ge(001) system.
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Copyright:© IOP Publishing 2010
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