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Article
Periodic step arrays on the aperiodic i-Al-Pd-Mn quasicrystal surface at high temperature
Physical Review B
Document Type
Article
Disciplines
Publication Date
1-1-2010
DOI
10.1103/PhysRevB.81.161406
Abstract
We have observed the configuration and motion of surface steps on the aperiodic icosahedral (i-) Al-Pd-Mn quasicrystal using low-energy electron microscopy and scanning tunneling microscopy. As the quasicrystal is cooled from high temperature, bulk vacancies migrate to the surface causing the surface to be etched. Surprisingly, this etching occurs by two types of steps with different heights moving in different directions with different velocities. The steady-state surface morphology is a uniformly spaced rhomboidal step network. This network requires that the layer stacking near the surface deviates from the bulk quasicrystal stacking.
Copyright Owner
American Physical Society
Copyright Date
2010
Language
en
File Format
application/pdf
Citation Information
Y. Sato, Barış Ünal, Thomas A. Lograsso, Patricia A. Thiel, et al.. "Periodic step arrays on the aperiodic i-Al-Pd-Mn quasicrystal surface at high temperature" Physical Review B Vol. 81 Iss. 16 (2010) p. 161406 Available at: http://works.bepress.com/thomas_lograsso/3/
This article is from Physical Review B 81, no. 16 (2010): 161406, doi:10.1103/PhysRevB.81.161406.