Acetylene on Cu(111): imaging a molecular surface arrangement with a constantly rearranging tip.
Acetylene on Cu(111) is investigated by scanning tunnelling microscopy (STM); a surface pattern previously derived from diffraction measurements can be validated, if the variation of the STM image transfer function through absorption of an acetylene molecule onto the tip apex is taken into account. Density functional theory simulations point to a balance between short-range repulsive interactions of acetylene/Cu(111) associated with surface stress and longer range attractive interactions as the origin of the ordering.
Pierce Hall, University of California-Riverside, Riverside, CA 92521, USA.
Yeming
Y
Zhu
Jonathan
J
Wyrick
Kamelia D
KD
Cohen
Katie Marie
KM
Magnone
Connor
C
Holzke
Daniel
D
Salib
Quan
Q
Ma
Dezheng
D
Sun
Ludwig
L
Bartels