Controlling Fano Profiles via Conical Intersections
arXiv:0709.2548 · doi:10.1103/PhysRevB.79.085303
Abstract
An ab initio analytical model for Fano resonances in two-channel systems is presented. We find that the lineshape parameter q factors into a background contribution q_b that depends only on the uncoupled channels and an interaction contribution q_i that is affected by the coupling between the channels, revealing how the overall lineshape parameter q may be controlled. In particular, we show how conical intersections of the background phase shifts have an important role in the interplay between q_b and q_i. Finally, control of Fano transmission profiles through q_b and q_i is demonstrated for quantum billiards.
4 pages, 3 figures
References in corpus (6)
- Coulomb-Modified Fano Resonance in a One-Lead Quantum Dot
- Fano resonance in crossed carbon nanotubes
- Fano resonance in discrete lattice models: controlling lineshapes with impurities
- Fano resonances and decoherence in transport through quantum dots
- Topological swimming in a quantum sea
- Scattering phase shifts in quasi-one-dimension