Media type: E-Article Title: Is keV ion-induced pattern formation on Si(001) caused by metal impurities? Contributor: Macko, Sven; Frost, Frank; Ziberi, Bashkim; Förster, Daniel F; Michely, Thomas imprint: IOP Publishing, 2010 Published in: Nanotechnology Language: Not determined DOI: 10.1088/0957-4484/21/8/085301 ISSN: 0957-4484; 1361-6528 Origination: Footnote: