1D-Physics

Low dimensional physics is characterized by a row of unusual effects, however many of them are not completely understood. 1D-electronic systems, as realized, e.g. in substrate supported nanowires, cannot be described by the Fermi liquid model. The Tomonaga-Luttinger model describes the electronic interactions in such conditions. Noble metal (Pt, Au) or rare earth silicide wires on semiconducting substrates (Si, Ge) are a marvelous playground for scientists dealing with the fundamental principles of 1D-physics. Unfortunately, our knowledge of the candidate systems is rather poor. In our group we develop atomic models for the wires and investigate their electronic, vibrational and optical properties.