Journal
PHYSICAL REVIEW LETTERS
Volume 113, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.157202
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Funding
- National Natural Science Foundation of China [21222101, U1432133, 11132009, 21331005, 11321503, J1030412]
- Chinese Academy of Science [XDB01010300]
- Fundamental Research Funds for the Central Universities [WK2060190031, WK2060190027, WK2310000024]
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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+ 3d(1) 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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