Conversion of Excitons to Spin-Soliton Pairs in Quasi-One-Dimensional Halogen-Bridged Metal Complexes

H. Okamoto; Y. Kaga; Y. Shimada; Y. Oka; Y. Iwasa; T. Mitani; M. Yamashita

doi:10.1103/PhysRevLett.80.861

Access by Xinjiang University

Conversion of Excitons to Spin-Soliton Pairs in Quasi-One-Dimensional Halogen-Bridged Metal Complexes

H. Okamoto, Y. Kaga, Y. Shimada, and Y. Oka

Y. Iwasa and T. Mitani

M. Yamashita

Research Institute for Scientific Measurements, Tohoku University, Sendai 980-77, Japan

Japan Advanced Institute of Science and Technology, Hokuriku, Ishikawa 923-12, Japan

Graduate School of Human Informatics, Nagoya University, Nagoya 464-01, Japan

PDF

Phys. Rev. Lett. 80, 861 – Published 26 January, 1998

DOI: https://doi.org/10.1103/PhysRevLett.80.861

Abstract

We have characterized the gap states from photoinduced absorption and photoinduced ESR studies on one-dimensional (1D) halogen-bridged metal complexes with degenerate and nondegenerate charge-density wave (CDW) ground state. A comparison of excitation profiles of self-trapped exciton (STE) luminescence with those of the gap states demonstrates that excitons are relaxed to spin-soliton pairs. From an analysis of the temperature dependence of luminescence decay time, conversion from the STE to the solitonic state is found to occur through a finite potential barrier, the magnitude of which strongly depends on the degeneracy of the CDW.

References (17)

G. Whitfield and P. B. Shaw, Phys. Rev. B 14, 3346 (1976).
K. Iwano, J. Phys. Soc. Jpn. 66, 1088 (1997).
S. Kivelson and W.-K. Wu, Phys. Rev. B 34, 5423 (1986).
J. Takimoto and M. Sasai, Phys. Rev. B 39, 8511 (1989).
X. Wei et al., Phys. Rev. Lett. 68, 666 (1992).
Y. Wada et al., J. Phys. Soc. Jpn. 58, 3013 (1989).
H. Okamoto et al., Mater. Sci. Eng. B 13, L9 (1992).
N. Matsumoto et al., Bull. Chem. Soc. Jpn. 51, 2334 (1978).
K. Toriumi et al., Acta Crystallogr. B 49, 497 (1993).
K. Toriumi et al. (unpublished).
Y. Tagawa and N. Suzuki, J. Phys. Soc. Jpn. 59, 4074 (1990).
J. T. Gammel et al., Phys. Rev. B 45, 6408 (1992).
K. Iwano and K. Nasu, J. Phys. Soc. Jpn. 61, 1380 (1992).
H. Okamoto et al., Phys. Rev. Lett. 69, 2248 (1992).
A. Terai, in Relaxation in Polymers, T. Kobayashi (World Scientific, Singapore,1993), p. 269.
Y. Wada et al., Solid State Commun. 67, 953 (1988).
Y. Wada et al., Phys. Rev. B 52, 8276 (1995).

[c1] G. Whitfield and P. B. Shaw, Phys. Rev. B 14, 3346 (1976).

[c2] K. Iwano, J. Phys. Soc. Jpn. 66, 1088 (1997).

[c3] S. Kivelson and W.-K. Wu, Phys. Rev. B 34, 5423 (1986).

[c4] J. Takimoto and M. Sasai, Phys. Rev. B 39, 8511 (1989).

[c5] X. Wei et al., Phys. Rev. Lett. 68, 666 (1992).

[c6] Y. Wada et al., J. Phys. Soc. Jpn. 58, 3013 (1989).

[c7] H. Okamoto et al., Mater. Sci. Eng. B 13, L9 (1992).

[c8] N. Matsumoto et al., Bull. Chem. Soc. Jpn. 51, 2334 (1978).

[c9] K. Toriumi et al., Acta Crystallogr. B 49, 497 (1993).

[c10] K. Toriumi et al. (unpublished).

[c11] Y. Tagawa and N. Suzuki, J. Phys. Soc. Jpn. 59, 4074 (1990).

[c12] J. T. Gammel et al., Phys. Rev. B 45, 6408 (1992).

[c13] K. Iwano and K. Nasu, J. Phys. Soc. Jpn. 61, 1380 (1992).

[c14] H. Okamoto et al., Phys. Rev. Lett. 69, 2248 (1992).

[c15] A. Terai, in Relaxation in Polymers, T. Kobayashi (World Scientific, Singapore,1993), p. 269.

[c16] Y. Wada et al., Solid State Commun. 67, 953 (1988).

[c17] Y. Wada et al., Phys. Rev. B 52, 8276 (1995).

Physical Review Letters

Export citation

Export citation

Conversion of Excitons to Spin-Soliton Pairs in Quasi-One-Dimensional Halogen-Bridged Metal Complexes

Abstract

References (17)

Outline

Information

Filter

Filter

Article Lookup

Enter a citation