Current-dependent positive magnetoresistance in Ga-doped La 0.5 Ca 0.5 MnO 3

Xin Chen*, Zhi Hong Wang, Run Wei Li, Bao Gen Shen, Hong Wu Zhao, Wen Shan Zhan, Jin Song Chen, Xixiang Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (SciVal)


The magnetic and transport properties of the Ga-doped charge-ordering state La 0.5 Ca 0.5 MnO 3 have been studied, A current-dependent large positive magnetoresistance (1080%) at 5 K was observed. These observations are interpreted in terms of the spin-dependent tunnelling process between ferromagnetic clusters embedded in an antiferromagnetic matrix.

Original languageEnglish (US)
Pages (from-to)751-755
Number of pages5
JournalChinese Physics
Issue number8
StatePublished - Dec 1 2001


  • Magnetoresistance
  • Manganese oxide
  • Spin-dependent tunnelling

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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