Quasicrystalline Electronic States of a One-Dimensionally Modulated Ag Film

Moras, P.; Theis, Wolfgang; Ferrari, L.; Gardonio, S.; Fujii, J.; Horn, Karsten; Carbone, C.

doi:10.1103/PhysRevLett.96.156401

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Quasicrystalline Electronic States of a One-Dimensionally Modulated Ag Film

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Horn, Karsten
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Moras, P., Theis, W., Ferrari, L., Gardonio, S., Fujii, J., Horn, K., et al. (2006). Quasicrystalline Electronic States of a One-Dimensionally Modulated Ag Film. Physical Review Letters, 96(15): 156401. doi:10.1103/PhysRevLett.96.156401.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-04CF-8

Abstract

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.