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oai:docta.ucm.es:20.500.14352/521672023-08-26T07:56:16Zcom_20.500.14352_14col_20.500.14352_15

Probing quantum-mechanical level repulsion in disordered systems by means of time-resolved selectively excited resonance fluorescence Malyshev, Andrey Knoeste, J. 538.9 Localized frenkel excitons Linear-chains Dynamics Relaxation Diffusion Física de materiales Física del estado sólido 2211 Física del Estado Sólido ©American Physical Society. This work was supported by the programs Ramón y Cajal (Ministerio de Ciencia y Tecnología de España) and NanoNed (Dutch Ministry of Economic Affairs). 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. program Ramón y Cajal (Ministerio de Ciencia y Tecnología de España) NanoNed (Dutch Ministry of Economic Affairs) Depto. de Física de Materiales Fac. de Ciencias Físicas TRUE pub 2023-06-20T12:40:28Z 2023-06-20T12:40:28Z 2007-02-23 journal article https://hdl.handle.net/20.500.14352/52167 0031-9007 10.1103/PhysRevLett.98.087401 eng open access application/pdf American Physical Society