Observation of ion-induced ripples in Cu(001)

Autor: Niravun Pavenayotin, Wai-Lun Chan, Eric Chason
Rok vydání: 2003
Předmět:
Zdroj: MRS Proceedings. 777
ISSN: 1946-4274
0272-9172
DOI: 10.1557/proc-777-t9.6
Popis: A linear instability theory proposed by Bradley and Harper accounts for many of the features of ripple formation on amorphous and semiconductor surfaces, but it is not consistent with measurements of sputtered metal surfaces. In the present work, we report observations of sputter ripples on Cu(001) surfaces which are similar to amorphous and semiconductor systems. By using higher ion flux and temperature than previously used, we have produced ripples in which the wavelength is independent of time and the amplitude increases exponentially during the early stages of growth. The ripple evolution was measured using in situ light scattering during sputtering.
Databáze: OpenAIRE