Phys. Rev. Lett. 54, 2619–2622 (1985)Observation of a Soliton Reconstruction of Au(111) by High-Resolution Helium-Atom DiffractionReceived 26 March 1985; published in the issue dated 17 June 1985 From an analysis of diffraction data for Au(111), we deduce that the observed 23-fold periodicity in the 〈110〉 direction can be described by a regular superstructure of one-dimensional extended stacking faults. We propose that this surface is a realization of the Frenkel-Kontorova model of competing interactions and that the periodic changes in stacking from ABC to ABA may thus take the form of solitons. The solitons, of half-width 11.8 Å, lead to an average compression of 4% in the 〈110〉 direction. © 1985 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.54.2619
DOI:
10.1103/PhysRevLett.54.2619
PACS:
68.20.+t, 61.16.-d, 79.20.Rf
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