Anomalous profile of amplitude mode in K0.30MoO3 at low temperatures studied by Raman spectroscopy

S. Nishio, Masato Kakihana

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We precisely reinvestigate the Charge-Density Wave (CDW) amplitude mode in molybdenum blue bronze (K0.30MoO3) by using Raman spectroscopy down to 4 K. The Raman profile of the amplitude mode is gradually changing from one harmonic oscillator form to an anomalous asymmetric one like a `fin' with decreasing temperature. This is probably due to a splitting of the amplitude mode and contrasted with the previous study, where the CDW amplitude mode was analyzed with one harmonic oscillator down to 10 K. This anomaly probably reflects a spatial variation of the CDW amplitude in the bulk of the crystal at low temperatures.

Original languageEnglish
Pages (from-to)7-9
Number of pages3
JournalSolid State Communications
Volume116
Issue number1
DOIs
Publication statusPublished - 2000 Aug 22
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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