Search for photoinduced absorption in materials with non-one-half band fillings

G. Minton, J. W. Brill

Research output: Contribution to journalArticlepeer-review


We have searched for photoinduced absorption in the quasi-one-dimensional charge-density-wave materials blue bronze, with an N M = 3 4 filled band, and trimethylammonium-iodide-TCNQ, with N M = 1 3. In analogy to conducting polymers with N M = 1 2, one expects to observe mid-gap states due to solitons, with charge (modulo e) Q = ± 2e M. We have observed no photoinduced absorption in either material, using both broad-band and monochromatic searches, giving upper limits on the product of the probability of soliton formation and the lifetime of the soliton.

Original languageEnglish
Pages (from-to)469-472
Number of pages4
JournalSynthetic Metals
Issue number1-3
StatePublished - Aug 15 1992

Bibliographical note

Funding Information:
TMAI-TCNQ crystals were kindly provided by A. J. Epstein of Ohio State University. We also appreciate the helpful comments of K. R. Sub-baswamy, G. Z. Yang, and L. Mihaly. This work was supported in part by the US National Science Foundation, grants #DMR-86-15463 and #DMR-89-15440.

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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