Dynamics of the charge-spin interplay in a perovskite manganite

K. Waku, T. Suzuki, T. Nomura, T. Katsufuji

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The interplay between charge and spin degrees of freedom is a key ingredient of the colossal magnetoresistance in perovskite manganites. However, our knowledge of such an interplay was limited to its static aspect, and very little was known regarding its dynamics. Here, we show that the ac (optical) conductivity of perovskite manganite Pr0.6Sr0.4MnO3 (TC=297K) under magnetic field does not show such a universal M2 scaling (M is the magnetization) as observed in the dc conductivity, but shows a marginal £ M £1 dependence in the critical regime. This result indicates a unique interplay between fluctuating spin and charge in this series of compounds.

Original languageEnglish
Article number012418
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number1
DOIs
Publication statusPublished - 2005 Oct 27

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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