Probing quantum-mechanical level repulsion in disordered systems by means of time-resolved selectively-excited resonance fluorescence
arXiv:cond-mat/0701406 · doi:10.1103/PhysRevLett.98.087401
Abstract
We argue that the time-resolved spectrum of selectively-excited resonance fluorescence at low temperature provides a tool for probing the quantum-mechanical level repulsion in the Lifshits tail of the electronic density of states in a wide variety of disordered materials. The technique, based on detecting the fast growth of a fluorescence peak that is red-shifted relative to the excitation frequency, is demonstrated explicitly by simulations on linear Frenkel exciton chains.
4 pages, 4 figures, to appear in Phys. Rev. Lett
References in corpus (5)
- Statistics of energy levels and eigenfunctions in disordered systems
- Decoherence of Excitons in Multichromophore Systems: Thermal Line Broadening and Destruction of Superradiant Emission
- Temperature dependent fluorescence in disordered Frenkel chains: interplay of equilibration and local band-edge level structure
- Statistics of low-energy levels of a one-dimensional weakly localized Frenkel exciton: A numerical study
- Low-temperature dynamics of weakly localized Frenkel excitons in disordered linar chains
Cited by in corpus (7)
- Coherent exciton dynamics in the presence of underdamped vibrations
- Coupling and Level Repulsion in the Localized Regime: From Isolated to Quasi-Extended Modes
- Superradiance at the localization-delocalization crossover in tubular chlorosomes
- Quest for Order in Chaos: Hidden Repulsive Level Statistics in Disordered Quantum Nanoaggregates
- Environment effects on the electric conductivity of the DNA
- Charge migration mechanisms in the DNA at finite temperature revisited; from quasi-ballistic to subdiffusive transport
- Selection of dominant multi-exciton transitions in disordered linear J-aggregates