Geometric Scaling of Stripe Modulations in BCC Cu Thin Films on Ag(100).
Physica B: Condensed Matter
Copper and silver have a sufﬁciently large mismatch of lattice parameters that the growth of Cu on Ag(1 0 0) substrates stabilizes the metastable body-centered cubic (BCC) form of Cu. This paper reports that layer-by-layer growth of the BCC ﬁlm occurs up to a critical thickness of 10 ML, beyond which a structural instability arises in the thin ﬁlm. This leads to a uniaxial laterally modulated phase giving rise to satellite peaks in the diffraction from both ﬁlm and substrate. The characteristic dependence of satellite spacing versus ﬁlm thickness is interpreted in terms of four possible variants of the modulated ﬁlm structure. Only one of these variants is consistent with the observed growth behavior.
|Title:||Geometric Scaling of Stripe Modulations in BCC Cu Thin Films on Ag(100)|
|UCL classification:||UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
UCL > School of BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
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