Pressure effects on the charge-ordering state in Sm0.2Ca0.8Mn1-xRuxO3 (x=0,0.04)

Vladimir Markovich, Evgeny Rosenberg, Gad Gorodetsky, C. Martin, A. Maignan, M. Hervieu, B. Raveau

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Transport properties of Sm0.2Ca0.8Mn1-xRuxO3 (x=0,0.04) have been investigated in the temperature range 15-300 K in external magnetic fields up to 1.5 T and hydrostatic pressure up to 1 GPa. The 4% Ru doping in Mn site converts the low-temperature robust orbital ordered phase observed in the undoped compound to a two-phase (ferromagnetic and charge ordered) ground state. As a result of such doping (phase-separated ground state), colossal magnetoresistance, slow relaxation of resistivity with logarithmic time dependence, and prehistory effects that are enhanced by pressure are observed in Sm0.2Ca0.8Mn0.96 Ru0.04O3. In contrast, the above effects are absent in Sm0.2Ca0.8MnO3.

Original languageEnglish GB
Article number224410
Pages (from-to)2244101-2244105
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number22
DOIs
StatePublished - 1 Dec 2001
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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