Phys. Rev. Lett. 66, 961–961 (1991)First-order transitions between surface phases with different step structuresReceived 1 June 1990; published in the issue dated 18 February 1991 A Comment on the Letter by Alerhand et al. Phys. Rev. Lett. 64, 2406 (1990). © 1991 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.66.961
DOI:
10.1103/PhysRevLett.66.961
PACS:
68.35.Bs, 61.16.Di, 64.80.Gd, 81.40.Ef
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