RT Journal Article
T1 Optical absorption in paired correlated random lattices
A1 Domínguez-Adame Acosta, Francisco
A1 Maciá Barber, Enrique Alfonso
A1 Sánchez, Angel
AB Optical absorption in a random one-dimensional lattice in the presence of paired correlated disorder is studied. The absorption line shape is evaluated by solving the microscopic equations of motion of the Frenkel-exciton problem in the lattice. We find that paired correlation causes the occurrence of well-defined characteristic lines in the absorption spectra which clearly differ from the case of unpaired correlation. The behavior of the absorption lines as a function of defect concentration is studied in detail. We also show how exciton dynamics can be inferred from experimental data by deriving an analytical expression relating the energy and intensity of lines to the model parameters.
PB American Physical Society
SN 0163-1829
YR 1994
FD 1994-09-01
LK https://hdl.handle.net/20.500.14352/59396
UL https://hdl.handle.net/20.500.14352/59396
LA eng
NO 1.	D. H. Dunlap, H.-L. Wu, and P. Phillips, Phys. Rev. Lett. 65, 88 (1990). 2.	H.-L. Wu and P. Phillips, Phys. Rev. Lett. BB, 1366 (1991). 3.	J. C. Flores and M. Hilke, J. Phys. A 28, L1255 (1993). 4.	A. Sanchez, E. Macia, and F. Dominguez-Adame, Phys. Rev. B 49, 147 (1994)5.	F. Dominguez-Adame, E. Maciá, and A. Sánchez, Phys. Rev. B 48, 6054 (1993). 6.	F. Domínguez-Adame, B. Méndez, A. Sánchez, and E. Maciá, Phys. Rev. B 49, 3839 (1994).7.	D. L. Huber and W. Y. Ching, Chem. Phys. 146, 409 (1990). 8.	D. L. Huber and W. Y. Ching, Phys. Rev. B $9, 8652 (1989).
NO © 1994 The American Physical Society.The authors thank Biaachi Mendez for a critical reading of the manuscript. This work is partially supported by UCM under project No. PR161/93-4811. A.S. is supported by a Ministerio de Educacion y Ciencia (Spain)/Fulbright postdoctoral scholarship, by Direccion General de Investigacion Cientifica y Tecnica (Spain) through Project No. PB92-0248, and by the European Community (Union Human Capital and Mobility Programme through Contract No. ERBCHRXCT930413). Work at Los Alamos is performed under the auspices of the U.S. Department of Energy.
NO UCM
NO Ministerio de Educacion y Ciencia (Spain)
NO European Community
DS Docta Complutense
RD 1 may 2024