Optical properties of the cation-deficient platinum chain salt K1.75Pt(CN)41.5H2O

Laura Greene, D. B. Tanner, A. J. Epstein, Joel S. Miller

Research output: Contribution to journalArticle

Abstract

The room-temperature polarized reflectance of a potassium-deficient platinum chain salt K1.75Pt(CN)41.5H2O [K(def)CP] has been measured in the infrared and visible. The reflectance is strongly anisotropic, with a plasma edge in the red and high reflectance in the infrared for light polarized parallel to the Pt chain axis and almost frequency-independent reflectance for the transverse polarization. Analysis of the plasma edge indicates a nearly-free-electron mass for the conduction electrons. The data show the existence of an energy gap at room temperature and suggest a Peierls transition above room temperature. The parallel polarized reflectance has structure in the infrared which is the first direct evidence for strong coupling of the conduction electrons to the C N stretching vibration of the tetracyanoplatinate unit in quasi-one-dimensional platinum chain conductors.

Original languageEnglish (US)
Pages (from-to)1331-1338
Number of pages8
JournalPhysical Review B
Volume25
Issue number2
DOIs
StatePublished - Jan 1 1982

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platinum
salts
reflectance
optical properties
cations
conduction electrons
room temperature
electron mass
polarized light
free electrons
potassium
conductors
transition temperature
vibration
polarization

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Optical properties of the cation-deficient platinum chain salt K1.75Pt(CN)41.5H2O. / Greene, Laura; Tanner, D. B.; Epstein, A. J.; Miller, Joel S.

In: Physical Review B, Vol. 25, No. 2, 01.01.1982, p. 1331-1338.

Research output: Contribution to journalArticle

Greene, Laura ; Tanner, D. B. ; Epstein, A. J. ; Miller, Joel S. / Optical properties of the cation-deficient platinum chain salt K1.75Pt(CN)41.5H2O. In: Physical Review B. 1982 ; Vol. 25, No. 2. pp. 1331-1338.
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