Abstract
We characterized the photoinduced gap states from photoinduced absorption (PA) spectroscopy in the halogen(X)-bridged metal(M) complexes having degenerate CDW state, [Pt(en)2][Pt(en)2X2](Cl04)4 (X=Br, I) and those having non-degenerate CDW state, [Pd(en)2][Pt(en)2X2](C104)4 (X=Br, I). In the former complexes, either spin-solitons or charged-solitons were observed depending on the gap energies. In the latter complexes, photogenerations of solitons are suppressed. We have also investigated the excitation profiles of the luminescence from the self-trapped exciton, which are compared with those of the PA signals in the two types of complexes. The results demonstrate that the luminescence process strongly competes with the dissociation to spin-soliton pairs followed by nonradiative recombinations.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
W.P. Su, J.R. Schrieffer and A.J. Heeger, Phys. Rev. Lett. 42,1698 (1979).
H. Okamoto, T. Mitani, K. Toriumi and M. Yamashita, Mater. Sci. Eng. 13, L9 (1992).
H. Okamoto, K. Toriumi, T. Mitani and M. Yamashita, Phys. Rev. B42,10381 (1990).
Y. Wada, T. Mitani, K. Toriumi and M. Yamashita, J. Phys. Soc. Jpn. 58,3013 (1989).
H. Okamoto, Y. Oka, T. Mitani, K. Toriumi and M. Yamashita, Mol. Cryst. Liq. Cryst. 256,161 (1994).
K. Toriumi, M. Yamashita, S. Kurita, I. Murase, and T. Ito, Acta Cryst. B49,497 (1993).
H. Okamoto, T. Mitani, K. Toriumi, and M. Yamashita, Phys. Rev. Lett. 69, 2248 (1992).
Y. Tagawa and N. Suzuki, Phys. Soc. Jpn. 59,4074 (1990).
J.T. Gammel, A. Saxena, I. Batistic, A.R. Bishop, and S.R. Phillpot, Phys. Rev. B45, 6408 (1992).
K. Iwano and K. Nasu, J. Phys. Soc. Jpn. 61,1380 (1992).
A. Kawamori, R. Aoki, and M. Yamashita, J. Phys. C18,5487 (1985).
X. Wei, B.C. Hess, Z.V. Vardeny and F. Wudl, Phys. Rev. Lett. 68, 666 (1992).
We previously reported the excitation profiles of PA signals of Pt-I-Pt, Pt-Br-Pt-(I) and Pt-Br-Pt-(II) in ref.5. In ref.5, we didn’t correct the data by taking account of the absorption coefficients. Therefore, the excitation profiles in ref.5 are different from those presented in this paper.
M. Haruki, M. Tanaka, and S. Kurita, Synth. Met. 19,901 (1987).
S. Kurita, M. Haruki, and K. Miyagawa, J. Phys. Soc. Jpn. 57,1789 (1988).
S. Kurita and M. Haruki, Synth. Met. 29, F129 (1989).
Mishima and K. Nasu, Phys. Rev. B39,5758(1989), ibid 39,5763 (1989).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1997 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Okamoto, H. (1997). Solitons, Polarons and Excitons in MX Chains. In: Nasu, K. (eds) Relaxations of Excited States and Photo-Induced Structural Phase Transitions. Springer Series in Solid-State Sciences, vol 124. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-60702-8_9
Download citation
DOI: https://doi.org/10.1007/978-3-642-60702-8_9
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-64516-7
Online ISBN: 978-3-642-60702-8
eBook Packages: Springer Book Archive