A Two Band Model for Halogen-Bridged Transition Metal Linear Chain Complexes

  • A. R. Bishop
  • J. Tinka Gammel
  • E. Y. LohJr.
  • S. R. Phillpot
  • S. M. Weber-Milbrodt
Part of the NATO ASI Series book series (NSSB, volume 213)


Halogen-bridged transition-metal complexes have been of interest to chemists for many decades as dyes and strongly dichroic materials [1]. However they have only recently begun to receive detailed consideration in the physics community [2–8]. Their potential importance arises because of:
  1. (i)

    The increasing appreciation of strong, competing electron-electron and electron-phonon interactions in low-dimensional materials and the consequent need to expand many-body techniques. The MX materials offer a rapidly expanding, near single-crystal (in contrast to, e.g., polyacetylene), class of quasi-1-D systems which can be “tuned” (by chemistry, pressure, doping, etc.) between various ground state extremes: from strong charge-disproportionation and large lattice distortion (e.g., ~ 20% distortion in PtCl) to weak charge-density-wave and small lattice distortion (e.g., ~ 5% distortion in PtI), to magnetic and undistorted (e.g., NiBr);

  2. (ii)

    The opportunity to probe doping- and photo-induced local defect states (polarons, bipolarons, kinks, excitons) and their interactions in controlled environments and the same large range of ground states; and

  3. (iii)

    The similarities between models and theoretical issues in these materials and the recently discovered oxide superconductors [3]. The MX materials are also closely connected conceptually with mixed-stack charge-transfer salts [9].



Optical Absorption Spectrum Exact Diagonalization Synthetic Metal Period Phase Site Ring 
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  1. 1.
    M.B. Robin and P. Day, in H.J. Emeleus (ed.), “Advances in Inorganic Chemistry and Radiochemistry”, Vol. 10, Academic Press, New York, 1967, p. 247; P. Day, in H.J. Keller (ed.), “Low Dimensional Cooperative Phenomena”, Plenum Press, New York, 1974, p. 191; H.J. Keller, in J.S. Miller (ed.), “Extended Linear Chain Compounds”, Vol. 1, Plenum Press, New York, 1982, p. 357.Google Scholar
  2. 2.
    K. Nasu, J. Phvs. Soc. Japan. 50 (1981) 235; 52 (1983) 3865; 53 (1984) 302; 53 (1984) 427; 54 (1985) 1933; J. Luminescence, 38 (1987) 90. K. Nasu and Y. Toyozawa, J. Phvs. Soc. Japan, 51 (1982) 2098; 51 (1982) 3111. A. Mishima and K. Nasu, Proceedings of ICSM 88, to appear in Synthetic Metals and unpublished.CrossRefADSMathSciNetGoogle Scholar
  3. 3.
    D. Baeriswyl and A.R. Bishop, Physica Scripta, T19 (1987) 239; J. Phys. C: Solid State Phys., 21 (1988)339.Google Scholar
  4. 4.
    Y. Ichinose, Solid State Commun., 50 (1984) 137.CrossRefADSGoogle Scholar
  5. 5.
    Y. Onodera, J. Phys. Soc. Japan, 56 (1987) 250.Google Scholar
  6. 6.
    S. Kurita, M. Haruki, and K. Miyagawa, J. Phys. Soc. Japan. 57 (1988) 1789; S. Kurita and M. Haruki, Proceedings of ICSM ’88, to appear in Synthetic Metals.CrossRefADSGoogle Scholar
  7. 7.
    S.D. Conradson et al., Solid State Commun., 65 (1988) 723; B.I. Swanson and S.D. Conradson, Proceedings of ICSM ’88, to appear in Synthetic Metals.CrossRefADSGoogle Scholar
  8. 8.
    A. Bishop, J.T. Gammel, and S. Phillpot, Proceedings of ICSM ’88, to appear in Synthetic Metals: J.T. Gammel, S.M. Weber-Milbrot, E.Y. Loh, Jr., and A.R. Bishop, Proceedings of ICSM ‘88, to appear in Synthetic Metals.Google Scholar
  9. 9.
    A. Painelli and A. Girlando, Proceedings of ICSM ’88, to appear in Synthetic Metals.Google Scholar
  10. 10.
    R.E. Peierls, “Quantum Theory of Solids”, Claredon, Oxford, 1955, p. 108.MATHGoogle Scholar
  11. 11.
    I. Batistic et. al, to be published.Google Scholar
  12. 12.
    D. Baeriswyl and K. Maki, Phys. Rev. B, 31 (1985) 6633.CrossRefADSGoogle Scholar
  13. 13.
    S. Weber and H. Büttner, J. Phys. C: Solid State Phys., 17, 1984, L337–L344; S. Weber and H. Büttner, Solid State Comm., 56, 1985, 395–398; S. Weber, thesis (Dissertation), Univ. Bayreuth (1985); S. M. Weber-Milbrodt and H. Büttner, to be submitted (1988).CrossRefADSGoogle Scholar
  14. 14.
    R. Donohoe, D. Tait, and B.I. Swanson, private communication.Google Scholar

Copyright information

© Plenum Press, New York 1989

Authors and Affiliations

  • A. R. Bishop
    • 1
  • J. Tinka Gammel
    • 1
  • E. Y. LohJr.
    • 1
  • S. R. Phillpot
    • 2
  • S. M. Weber-Milbrodt
    • 3
  1. 1.Theoretical DivisionLos Alamos National LaboratoryLos AlamosUSA
  2. 2.Materials Science DivisionArgonne National LaboratoryArgonneUSA
  3. 3.Physikalisches InstitutUniversität BayreuthW. Germany

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