Scattering properties of a cut-circle billiard waveguide with two   conical leads
  We examine a two-dimensional electron waveguide with a cut-circle cavity and conical leads. By considering Wigner delay times and the Landauer-B\"{u}ttiker conductance for this system, we probe the effects of the closed billiard energy spectrum on scattering properties in the limit of weakly coupled leads. We investigate how lead placement and cavity shape affect these conductance and time delay spectra of the waveguide. 
Kathrin Fuchss, Suhan Ree, and L.E. Reichl