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Optical properties of hexamethylene-tetraselenafulvalinium tetracyanoquinodi-methanide (HMTSF-TCNQ)

  • C. S. Jacobsen
  • K. Bechgaard
  • J. R. Andersen
V. Experimental Investigations on TTF-TCNQ and its Derivatives
Part of the Lecture Notes in Physics book series (LNP, volume 65)

Abstract

Polarized single crystal reflectance studies of HMTSF-TCNQ are presented. One reflectance component perpendicular to the highly conducting direction is flat and rather low, the other shows a transition at ω = 16000 cm−1, much stronger than usually seen in conducting TCNQ salts. The highly conducting direction displays a plasma edge. An analysis yields a plasmon frequency ωp = 7400 cm−1, an inverse life time λ = 1300 cm−1, and an optical mass m* = 1.9 mo. The low-temperature reflectance gives ωp = 8200 cm−1 and a 2.4 times longer lifetime, consistent with the temperature dependence of the do conductivity.

Keywords

Optical Conductivity Charge Density Wave Plasma Edge Plasmon Frequency Temperature Reflectance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Akadémiai Kiadó 1977

Authors and Affiliations

  • C. S. Jacobsen
    • 1
  • K. Bechgaard
    • 2
  • J. R. Andersen
    • 3
  1. 1.Physics Laboratory IIITechnical University of DenmarkLyngbyDenmark
  2. 2.H.C. Ørsted InstituteDenmark
  3. 3.Chemistry DepartmentRisøDenmark

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