Sinusoidal modulation of a thin film of Nb on sapphire Gibaud, A. ; Mc-Morrow, D. F. ; Cowley, R. A. Abstract Publication: Physica B Condensed Matter Pub Date: April 1994 DOI: 10.1016/0921-4526(94)90128-7 Bibcode: 1994PhyB..198...63G