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The Effects of Pressure on the Charge Density Wave in Low Dimensional Solids: A Raman Study

  • Robert J. Donohoe
  • Steven P. Love
  • Maria A. Y. Garcia
  • Basil I. Swanson
Chapter
Part of the NATO ASI Series book series (NSSB, volume 286)

Abstract

The Raman spectroscopy of bromide- and chloride-bridged platinum linear chains under isotropic pressure reveals an initial hardening and subsequent softening of the symmetric halide stretching mode as pressure is increased. These results reflect an initial increase in the extent of the metal sublattice charge disproportionation (charge density wave, CDW) followed by CDW weakening and are consistent with previous absorption studies of the band gap. Phase changes that are independent of the CDW strength occur for both materials near 2.5 and 4.5 GPa and, at least for the lower pressure transition, may be due to an indirect effect that leads to interchain ordering.

Keywords

Charge Density Wave Raman Data Chain Axis Photoinduced Absorption Charge Disproportionation 
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

© Springer Science+Business Media New York 1991

Authors and Affiliations

  • Robert J. Donohoe
    • 1
  • Steven P. Love
    • 1
  • Maria A. Y. Garcia
    • 1
  • Basil I. Swanson
    • 1
  1. 1.Inorganic and Structural Chemistry Group INC-4; MS-C345Los Alamos National LaboratoryLos AlamosUSA

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