Large negative magnetoresistance induced by anionic solid solutions in two-dimensional spin-frustrated transition metal chalcogenides

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

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Author(s)

  • Yuqiao Guo
  • Jun Dai
  • Jiyin Zhao
  • Changzheng Wu
  • Dianqi Li
  • Lidong Zhang
  • Wei Ning
  • Mingliang Tian
  • Yi Xie

Detail(s)

Original languageEnglish
Article number157202
Journal / PublicationPhysical Review Letters
Volume113
Issue number15
Publication statusPublished - 6 Oct 2014
Externally publishedYes

Abstract

We report an anionic solid solution process that induces frustrated magnetic structures within two-dimensional transition metal chalcogenides, which leads to huge negative magnetoresistance effects. Ultrathin nanosheets of TiTe2-xIx solid solutions, which are a new class of inorganic two-dimensional magnetic material, exhibit negative magnetoresistance with a value of up to -85%, due to the spin-dependent scattering effects of local Ti3+ 3d1 moments that are antiferromagnetically coupled. Moreover, TiTe2-xIx serials show unique transport behaviors with continuous evolution from metallic to semiconducting states. We anticipate that anionic doping will be a powerful tool for optimizing the intrinsic physical properties of two-dimensional transition metal chalcogenide system.

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Citation Format(s)

Large negative magnetoresistance induced by anionic solid solutions in two-dimensional spin-frustrated transition metal chalcogenides. / Guo, Yuqiao; Dai, Jun; Zhao, Jiyin et al.
In: Physical Review Letters, Vol. 113, No. 15, 157202, 06.10.2014.

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