title: Direct observation of misfit dislocation glide on surfaces.
abstract: Using scanning tunneling microscopy we have observed thermally induced dislocation glide in monolayer Cu films on Ru(0001) at room temperature. The motion is governed by a Peierls barrier that depends on the detailed structure of the dislocations, in particular upon whether the threading dislocations that terminate them are dissociated or not. Calculations based on the Frenkel-Kontorova model reproduce the threading dislocation structure and provide estimates of the Peierls barrier and dislocation stiffness which are consistent with experiment.
authors.affiliation: Sandia National Laboratories, Livermore, California 94550, USA.
authors.forename: J
authors.initials: J
authors.lastname: de La Figuera
authors.forename: K
authors.initials: K
authors.lastname: Pohl
authors.forename: O R
authors.initials: OR
authors.lastname: de La Fuente
authors.forename: A K
authors.initials: AK
authors.lastname: Schmid
authors.forename: N C
authors.initials: NC
authors.lastname: Bartelt
authors.forename: C B
authors.initials: CB
authors.lastname: Carter
authors.forename: R Q
authors.initials: RQ
authors.lastname: Hwang