title: Pseudomorphic growth of a single element quasiperiodic ultrathin film on a quasicrystal substrate.
abstract: 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 A and L=7.3+/-0.3 A, whose ratio equals tau=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.
authors.affiliation: Surface Science Research Centre, The University of Liverpool, Liverpool L69 3BX, United Kingdom.
authors.forename: J
authors.initials: J
authors.lastname: Ledieu
authors.forename: J T
authors.initials: JT
authors.lastname: Hoeft
authors.forename: D E
authors.initials: DE
authors.lastname: Reid
authors.forename: J A
authors.initials: JA
authors.lastname: Smerdon
authors.forename: R D
authors.initials: RD
authors.lastname: Diehl
authors.forename: T A
authors.initials: TA
authors.lastname: Lograsso
authors.forename: A R
authors.initials: AR
authors.lastname: Ross
authors.forename: R
authors.initials: R
authors.lastname: McGrath