Low temperature magnetoresistance and the magnetic phase diagram of La1-xCaxMnO3

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • P. Schiffer
  • A. P. Ramirez
  • W. Bao
  • S.-W. Cheong

Detail(s)

Original languageEnglish
Pages (from-to)3336-3339
Journal / PublicationPhysical Review Letters
Volume75
Issue number18
Online published30 Oct 1995
Publication statusPublished - 30 Oct 1995
Externally publishedYes

Abstract

The complete phase diagram of a "colossal" magnetoresistance material (La1-xCaxMnO3) was obtained for the first time through magnetization and resistivity measurements over a broad range of temperatures and concentrations. Near = 0.50, the ground state changes from a ferromagnetic (FM) conductor to an antiferromagnetic (AFM) insulator, leading to a strongly first order AFM transition with supercooling of ∼30% TN at = 0.50. An unexpectedly large magnetoresistance is seen at low temperatures in the FM phase, and is largely attributed to unusual domain wall scattering. 

Citation Format(s)

Low temperature magnetoresistance and the magnetic phase diagram of La1-xCaxMnO3. / Schiffer, P.; Ramirez, A. P.; Bao, W. et al.
In: Physical Review Letters, Vol. 75, No. 18, 30.10.1995, p. 3336-3339.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review