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To explain the unusual nonsaturating linear magnetoresistance observed in silver chalcogenides, thequantum scenario has been proposed based on the assumption of gapless linear energy spectrum. Here weshow, by first principles calculations, that -Ag2Te with distorted antifluorite structure is in fact atopological insulator with gapless Dirac-type surface states. The characteristic feature of this new binarytopological insulator is the highly anisotropic Dirac cone, in contrast with known examples,
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