Dalpian, G. M.Fazzio, A.Janotti, A.da Silva, Antônio J. R.2004-12-032004-12-0320012001http://hdl.handle.net/2003/55510.17877/DE290R-10336enThe American Physical SocietyPhysical Review Letters530Two-Atom Structures of Ge on Si(100): Dimers versus Adatom Pairs10.1103/PhysRevLett.87.036104article (journal)