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Evidence for an excited state with a large lattice relaxation in quasi-one-dimensional halogen-bridged Ni complexes

Evidence for an excited state with a large lattice relaxation in quasi-one-dimensional... We investigated the excited states of a one-dimensional charge-transfer Mott insulator NiBr ( chxn ) 2 Br 2 by femtosecond luminescence spectroscopy. In the picosecond region, we observed a luminescence component which is different from that observed under steady-state excitation. This picosecond luminescence has a large Stokes shift and a broad bandwidth, suggesting the existence of an excited state with large lattice relaxation in addition to the excited state with a small relaxation. The dynamical behavior of the luminescence has been qualitatively interpreted in terms of a model assuming two adiabatic potential-energy surfaces. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Evidence for an excited state with a large lattice relaxation in quasi-one-dimensional halogen-bridged Ni complexes

Physical Review B , Volume 70 (8) – Aug 15, 2004
4 pages

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References (11)

Publisher
American Physical Society (APS)
Copyright
Copyright © 2004 The American Physical Society
ISSN
1550-235X
DOI
10.1103/PhysRevB.70.081101
Publisher site
See Article on Publisher Site

Abstract

We investigated the excited states of a one-dimensional charge-transfer Mott insulator NiBr ( chxn ) 2 Br 2 by femtosecond luminescence spectroscopy. In the picosecond region, we observed a luminescence component which is different from that observed under steady-state excitation. This picosecond luminescence has a large Stokes shift and a broad bandwidth, suggesting the existence of an excited state with large lattice relaxation in addition to the excited state with a small relaxation. The dynamical behavior of the luminescence has been qualitatively interpreted in terms of a model assuming two adiabatic potential-energy surfaces.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Aug 15, 2004

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