Heteroepitaxy of erbium-doped silicon layers on sapphire substrates Shengurov, V. G. ; Pavlov, D. A. ; Svetlov, S. P. ; Chalkov, V. Yu. ; Shilyaev, P. A. ; Stepikhova, M. V. ; Krasil'Nikova, L. V. ; Drozdov, Yu. N. ; Krasil'Nik, Z. F. Abstract Publication: Physics of the Solid State Pub Date: January 2005 DOI: 10.1134/1.1853452 Bibcode: 2005PhSS...47...89S