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

P. Schiffer, A. P. Ramirez, W. Bao, S. W. Cheong

Research output: Contribution to journalArticlepeer-review

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 x = 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 x = 0.50. An unexpectedly large magnetoresistance is seen at low temperatures in the FM phase, and is largely attributed to unusual domain wall scattering.

Original languageEnglish (US)
Pages (from-to)3336-3339
Number of pages4
JournalPhysical review letters
Volume75
Issue number18
DOIs
StatePublished - 1995

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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