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Hamburg 2001 – scientific programme

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O: Oberflächenphysik

O 13: Postersitzung (Adsorption auf Oberfl
ächen, Oberfl
ächenreaktionen, Elektronische Struktur, Epitaxie und Wachstum, Halbleiteroberfl
ächen und Grenzfl
ächen, Oxide und Isolatoren)

O 13.40: Poster

Monday, March 26, 2001, 19:00–22:00, Foyer zu B

Tuning dimensionality by nanowire adsorption on layered materials — •Rainer Adelung1, Julia Brandt1, Kai Roßnagel1, Lutz Kipp1, Michael Skibowski1, Claudia Ramirez2, Thomas Strasser2, and Wolfgang Schattke21Institut für Experimentelle und Angewandte Physik, Universität Kiel, 24098 Kiel — 2Institut für Theoretische und Astrophysik, Universität Kiel, 24098 Kiel

The dimensionality of electronic states determines a number of physical phenomena such as phase transitions, transport or superconductivity. Employing scanning tunneling microscopy combined with angle resolved photoemission spectroscopy we demonstrate how the dimensionality of electronic states can be continuously tuned from three to two dimensions [1]. This is achieved by adsorption of nanowires on surfaces of layered crystals without changing the chemical composition of the material. Exemplary results for Rb nanowires on TiTe2 are discussed with help of electronic structure calculations.
Adelung et al., Phys. Rev. Lett. (2001), in press.

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