Phys. Rev. Lett. 57, 2983–2986 (1986)Electrons at Disordered Surfaces and 1/f NoiseReceived 16 July 1986; published in the issue dated 8 December 1986 We calculate for the first time the distribution of energy widths for Anderson localized states at a surface and show that electrical noise is produced with a 1/f spectrum. The distribution has a natural cut-off at widths of ℏ/lc, where lc∝exp(δ′2L/2) and δ′2 measures the disorder; lc is typically many hours. The scanning tunneling microscope is proposed as the ideal device for observing these fluctuations. © 1986 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.57.2983
DOI:
10.1103/PhysRevLett.57.2983
PACS:
73.20.-r, 71.55.Jv
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