Pseudogap mediated by quantum-size effects in lead islands.
نویسندگان
چکیده
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 approximately 80 K and are uniquely related to the quantum well nanostructure of the Pb islands. A systematic analysis indicates that electron-phonon scattering is responsible for the observed electronic structure.
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ورودعنوان ژورنال:
- Physical review letters
دوره 102 7 شماره
صفحات -
تاریخ انتشار 2009