Quasicrystalline electronic states of a one-dimensionally modulated Ag film.
Ag films on GaAs(110) exhibit a one-dimensional quasiperiodic modulation, resulting in a Fibonacci sequence of parallel stripes with two different widths. Valence level photoemission shows that the Ag electronic states acquire a unique character along the quasiperiodic direction, distinctively manifested by a hierarchy of energy level replicas and avoided crossings at characteristic intervals in reciprocal space. These observations demonstrate the strong influence of the one-dimensional quasiperiodic potential on the Ag film states.
Moras
P
P
Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Trieste, Italy.
Theis
W
W
Ferrari
L
L
Gardonio
S
S
Fujii
J
J
Horn
K
K
Carbone
C
C