8 papers
Boundary Conditions, the Critical Conductance Distribution, and One-Parameter Scaling
Daniel Braun, Etienne Hofstetter, Gilles Montambaux +1
We study the influence of boundary conditions transverse to the transport direction for disordered mesoscopic conductors both at the Anderson metal-insulator transition and in the…
One-parameter Superscaling at the Metal-Insulator Transition in Three Dimensions
Imre Varga, Etienne Hofstetter, Janos Pipek
Based on the spectral statistics obtained in numerical simulations on three dimensional disordered systems within the tight--binding approximation, a new superuniversal scaling rel…
Level Curvatures and Conductances: A Numerical Study of the Thouless Relation
D. Braun, E. Hofstetter, G. Montambaux +1
The Thouless conjecture states that the average conductance of a disordered metallic sample in the diffusive regime can be related to the sensitivity of the sample's spectrum to a…
Disordered systems and the metal-insulator Transition: A super universality class
E. Hofstetter
The critical behaviour of three-dimensional disordered systems is investigated by analysing the spectral fluctuations of the energy spectrum. Our results suggest that the initial s…
2-Dimensional Electron Gas in a Linearly Varying Magnetic Field. ``Quantisation'' of the Electron and Current Density
E. Hofstetter, J. M. C. Taylor, A. MacKinnon
We have developed new methods to calculate dispersion curves (analytically in the simpler cases) from which we are able to derive the spatial distribution of electron and current d…
Does a magnetic field modify the critical behaviour at the metal-insulator transition in 3-dimensional disordered systems?
E. Hofstetter, M. Schreiber
The critical behaviour of 3-dimensional disordered systems with magnetic field is investigated by analyzing the spectral fluctuations of the energy spectrum. We show that in the th…