Quantum confinement between self-organized Pt nanowires on Ge(001)

N. Oncel, Arie van Houselt, J. Huijben, A.S.V.M. Hallbäck, O. Gurlu, Henricus J.W. Zandvliet, Bene Poelsema

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The existence of one-dimensional (1D) electronic states between self-organized Pt nanowires spaced 1.6 or 2.4 nm apart on a Ge(001) surface is revealed by low-temperature scanning tunneling microscopy. These perfectly straight Pt nanowires act as barriers for a surface state (located just below the Fermi level) of the underlying terrace. The energy positions of the 1D electronic states are in good agreement with the energy levels of a quantum particle in a well. Spatial maps of the differential conductivity of the 1D electronic states conclusively reveal that these states are exclusively present in the troughs between the Pt nanowires.
Original languageUndefined
Pages (from-to)-
Number of pages116801
JournalPhysical review letters
Issue number11
Publication statusPublished - 2005


  • IR-53848
  • METIS-227130

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