Abstract
We use dynamical mean field theory to find an exact solution for inelastic light scattering in strongly correlated materials such as those near a quantum-critical metal-insulator transition. We evaluate the results for (Raman) scattering and find that resonant effects can be quite large, and yield a double resonance, a significant enhancement of nonresonant scattering peaks, a joint resonance of both peaks when the incident photon frequency is on the order of , and the appearance of an isosbestic point in all symmetry channels for an intermediate range of incident photon frequencies.
- Received 4 November 2003
DOI:https://doi.org/10.1103/PhysRevLett.93.137402
©2004 American Physical Society