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Local epitaxy of Ag on Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>8+x</sub>(001)
Auteur(s)
Schwaller, P.
Aebi, Philipp
Osterwalder, Jürg
Schlapbach, Louis
Shimoda, M.
Mochiku, T.
Kadowaki, K.
Date de parution
1993
In
Physical Review B, American Physical Society (APS), 1993/48/9/6732-6735
Résumé
Thin films of Ag have been deposited onto cleaved Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>8+x</sub>(001) surfaces at room temperature. Ag 3<i>d</i> x-ray photoelectron diffraction experiments show very poor local order at coverages of up to 7 Å. For higher Ag coverages, a distinct diffraction pattern is forming, indicative of local epitaxy in the form of two domains of Ag(110) patches with one diagonal of the rectangular surface unit cell aligned along the substrate a axis. Comparison with previously published scanning-tunneling-microscopy results [Y. S. Luo <i>vet al. </i>, Phys. Rev. B <b>46</b>, 1114 (1992)] leads us to the conclusion that Ag epitaxy is promoted by local disruption of the substrate upon initial Ag deposition.
Identifiants
Type de publication
journal article
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