Magnetotransport in ferromagnetic (Ga,Mn)N epitaxial films

M. H. Ham, M. C. Jeong, W. Y. Lee, J. M. Myoung, J. M. Lee, J. Y. Chang, S. H. Han

Research output: Contribution to journalConference article

Abstract

We present the ferromagnetism and magnetotransport properties in the (Ga,Mn)N epitaxial films with very low Mn concentrations grown by plasma-enhanced molecular beam epitaxy (PEMBE). The (Ga,Mn)N epitaxial films were found to exhibit ferromagnetic ordering with Curie temperature of 700 K. All the films exhibit n-type characteristics. The negative magnetoresistance was observed below 150 K, and found to gradually increase with decreasing temperature. The ferromagnetism in the (Ga,Mn)N is due to the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between the localized Mn moments mediated by the electron gas.

Original languageEnglish
Pages (from-to)1041-1044
Number of pages4
JournalMaterials Science Forum
Volume449-452
Issue numberII
DOIs
Publication statusPublished - 2004 Jan 1
EventDesigning, Processing and Properties of Advanced Engineering Materials: Proceedings on the 3rd International Symposium on Designing, Processing and Properties of Advanced Engineering Materials - Jeju Island, Korea, Republic of
Duration: 2003 Nov 52003 Nov 8

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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