22 citations · 50 across the 6 of their papers we have counts for
6 papers
Jahn-Teller effect versus Hund's rule coupling in C60N-
Samuel Wehrli, Manfred Sigrist
We propose variational states for the ground state and the low-energy collective rotator excitations in negatively charged C60N- ions (N=1...5). The approach includes the linear el…
Theory of the different photoemission spectra of metallic and insulating C60 compounds
Samuel Wehrli, T. M. Rice, Manfred Sigrist
Metallic K3C60 shows pronounced structure and a sharp Fermi edge in integrated photoemission spectra (PES) while the insulating K4C60 and K6C60 phases display only a broad structur…
Interface steps in field effect devices
S. Wehrli, C. Helm
The charge doped into a semiconductor in a field effect transistor (FET) is generally confined to the interface of the semiconductor. A planar step at the interface causes a potent…
Field-doping of C60 crystals: A view form theory
Erik Koch, Olle Gunnarsson, Samuel Wehrli +1
The proposal of using the field-effect for doping organic crystals has raised enormous interest. To assess the feasibility of such an approach, we investigate the effect of a stron…
Field-doping of C60 crystals: Polarization and Stark splitting
S. Wehrli, E. Koch, M. Sigrist
We investigate the possibility of doping C60 crystals by applying a strong electric field. For an accurate description of a C60 field-effect device we introduce a multipole expansi…
Charge profile of surface doped C60
Samuel Wehrli, Didier Poilblanc, T. M. Rice
We study the charge profile of a C60-FET (field effect transistor) as used in the experiments of Schoen, Kloc and Batlogg. Using a tight-binding model, we calculate the charge prof…