Probing quantum-mechanical level repulsion in disordered systems by means of time-resolved selectively excited resonance fluorescence
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 det...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2007 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/52167 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/52167 |
| Access Level: | acceso abierto |
| Palabra clave: | 538.9 Localized frenkel excitons Linear-chains Dynamics Relaxation Diffusion Física de materiales Física del estado sólido 2211 Física del Estado Sólido |
| Sumario: | 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 redshifted relative to the excitation frequency, is demonstrated explicitly by simulations on linear Frenkel exciton chains. |
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