Grazing incidence Ar+ ion induced creation and azimuth dependent evolution of nanogrooves on Cu(001)

Description

Grazing incidence 800 eV Ar+ sputtering on a Cu(001) surface leads to the formation of nanogrooves in which only 3 layers are involved. With high resolution LEED we found that initially the distance between the nanogrooves L depends linearly on the sputter time: L=L0+St. Both the initial average distance L0 and a separation rate S depends on temperature. For sputtering along the [110] and [100] azimuths, a similar L0 is found while a higher slope is observed along [100]. For increased sputter time, L clearly saturates for sputtering along the [100]. Annealing experiments of initially created grooves show a similar separation rate S, indicating that this behaviour does not originate from the ion sputtering. The temporal evolution and observed saturation of the distance between the nanogrooves along both the [100] and [110] azimuth will be discussed.

Period	5 Mar 2005
Event title	DPG Frühjahrstagung 2005 Berlin: (DPG Spring Meeting) - Physik seit Einstein
Event type	Conference
Organiser	Deutsche Physikalische Gesellschaft
Location	Berlin, GermanyShow on map
Degree of Recognition	International