Phys. Rev. Lett. 89, 226801 (2002) [4 pages]Surface-State Depopulation on Small Ag(111) TerracesReceived 11 June 2002; published 6 November 2002 The dependence of the local density of states near the Fermi energy EF on the width of terraces T is investigated by tunneling scanning spectroscopy on Ag(111) at 7 K. With decreasing T, the electronic density in the occupied surface state shifts monotonically towards EF, leading to a depopulation at T=3.2 nm in quantitative agreement with a Fabry-Pérot model. Depopulation coincides with a switch from confinement by terrace modulation to step modulation. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.226801
DOI:
10.1103/PhysRevLett.89.226801
PACS:
73.20.At, 68.37.Ef
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