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Title: Pseudogap mediated by quantum-size effects in lead islands
Authors: Wang, Kedong
Zhang, Xieqiu
Loy, Michael M.
Chiang, T. -C.
Xiao, Xudong
Keywords: Scanning tunneling spectroscopy
Pb islands
Issue Date: 19-Feb-2009
Citation: Physical review letters, v. 102, 076801, 2009
Abstract: Scanning tunneling spectroscopy measurements of Pb islands on Si(111) at high energy resolution reveal a novel pseudogap, or a pseudopeak in special cases, around the Fermi level in addition to the usual quantum well states. These gap or peak features persist to temperatures as high as ~80 K and are uniquely related to the quantum well nanostructure of the Pb islands. A systematic analysis indicates that electronphonon scattering is responsible for the observed electronic structure.
Rights: Physical Review Letters © Copyright 2009 American Physical Society. The Journal's web site is located at
Appears in Collections:PHYS Journal/Magazine Articles

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