Localization of the Cu111 surface state by single Cu adatoms.
نویسندگان
چکیده
The Cu adatom-induced localization of the two-dimensional Shockley surface state at the Cu(111) surface was identified from experimental and simulated scanning tunneling microscopy spectra. The localization gives rise to a resonance located just below the surface state band edge. The adatom-induced surface state localization is discussed in terms of the existence theorem for bound states in any attractive two-dimensional potential. We also identify adatom-induced resonance states deriving from atomic orbitals in both experimental and simulated spectra.
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عنوان ژورنال:
- Physical review letters
دوره 93 20 شماره
صفحات -
تاریخ انتشار 2004