Comment on "Phase contribution of image potential on empty quantum well states in Pb islands on the Cu(111) surface".
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چکیده
منابع مشابه
Phase contribution of image potential on empty quantum well States in pb islands on the cu(111) surface.
We use scanning tunneling spectroscopy to explore the quantum well states in the Pb islands grown on a Cu(111) surface. Our observation demonstrates that the empty quantum well states, whose energy levels lie beyond 1.2 eV above the Fermi level, are significantly affected by the image potential. As the quantum number increases, the energy separation between adjacent states is shrinking rather t...
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We use scanning tunneling microscopy and spectroscopy to measure the energy shift of empty quantum-well (QW) states in Pb islands on the Cu(111) surface. It is found that, with an increase of the electric field, the behavior of the energy shift can be grouped into two different modes for most QW states. In the first mode, the state energy moves toward high energy monotonically. In the second mo...
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The search for methods to produce structures highly organized at the atomic scale during epitaxy is an active research area since it holds the promise for basic discoveries and novel technological applications. Along with the well known kinetic and thermodynamic parameters, it was recently found that Quantum Size Effects can play a crucial role during epitaxial growth [1-3]. For instance, metal...
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Inelastic tunneling spectroscopy of Pb islands on Cu(111) obtained by scanning tunneling microscopy below 1 K provides a direct access to the local Eliashberg function of the islands with high energy resolution. The Eliashberg function describes the electron-phonon interaction causing conventional superconductivity. The measured Eliashberg function strongly depends on the local thickness of the...
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Low-temperature scanning tunneling microscopy and spectroscopy at 7 K was used to assemble and characterize native adatom islands of successive size on the Cu(111) surface. Starting from the single adatom we observe the formation of a series of quantum states which merge into the well known two-dimensional Shockley surface state in the limit of large islands. Our experiments reveal a natural ph...
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ورودعنوان ژورنال:
- Physical review letters
دوره 106 24 شماره
صفحات -
تاریخ انتشار 2011