Collective modes in unconventional density waves

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3 Citations (Scopus)

Abstract

We have investigated the collective modes of unconventional charge and spin density waves (UCDW, USDW) in quasi-one dimensional systems in random phase approximation. The density correlator regains its normal-state form due to the phase degree of freedom of the condensate. The possible effect of impurities is also discussed. From this, the current-current correlation function is evaluated through charge conservation. The spin susceptibility of USDW remains anisotropic in spite of the lack of any periodic modulation of the spin density. In UCDW, the spin response gets weaker in all three directions as the temperature is lowered.

Original languageEnglish
Pages (from-to)396-402
Number of pages7
JournalEurophysics Letters
Volume61
Issue number3
DOIs
Publication statusPublished - Feb 1 2003

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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