Giant positive magnetoresistance in metallic VOx thin films

A. D. Rata; V. Kataev; D. Khomskii; T. Hibma

doi:10.1103/PhysRevB.68.220403

Giant positive magnetoresistance in metallic VOx thin films

Strongly Correlated Electrons 2009-11-10 v2 Materials Science

Authors: A. D. Rata , V. Kataev , D. Khomskii , T. Hibma

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Abstract

We report on giant positive magnetoresistance effect observed in VOx thin films, epitaxially grown on SrTiO3 substrate. The MR effect depends strongly on temperature and oxygen content and is anisotropic. At low temperatures its magnitude reaches 70% in a magnetic field of 5 T. Strong electron-electron interactions in the presence of strong disorder may qualitatively explain the results. An alternative explanation, related to a possible magnetic instability, is also discussed.

Keywords

magnetoresistance VOx thin films SrTiO3 substrate electron-electron interactions magnetic instability

Cite

@article{arxiv.cond-mat/0307174,
  title  = {Giant positive magnetoresistance in metallic VOx thin films},
  author = {A. D. Rata and V. Kataev and D. Khomskii and T. Hibma},
  journal= {arXiv preprint arXiv:cond-mat/0307174},
  year   = {2009}
}

Comments

4 pages, 5 figures included in the text, references updated

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