Journal or Book Title
Physical Review Letters
An ultrathin film with a periodic interlayer spacing was grown by the deposition of Cu atoms on the fivefold surface of the icosahedral Al70Pd21Mn9 quasicrystal. For coverages from 5 to 25 monolayers, a distinctive quasiperiodic low-energy electron diffraction pattern is observed. Scanning tunneling microscopy images show that the in-plane structure comprises rows having separations of S=4.5±0.2 Å and L=7.3±0.3 Å, whose ratio equals τ=1.618… within experimental error. The sequences of such row separations form segments of terms of the Fibonacci sequence, indicative of the formation of a pseudomorphic Cu film.
American Physical Society
Ledieu, J.; Hoeft, J. T.; Reid, D. E.; Smerdon, J. A.; Diehl, R. D.; Lograsso, Thomas A.; Ross, A. R.; and McGrath, R., "Pseudomorphic Growth of a Single Element Quasiperiodic Ultrathin Film on a Quasicrystal Substrate" (2004). Ames Laboratory Publications. 22.