Abstract
The type-II Dirac and Weyl fermions emerge at the topologically protected touching points of electron and hole pockets, which form highly tilted Dirac cones along certain momentum directions. Recently, the transition-metal dichalcogenide PtSe2 with space group P3¯m1 was predicted as a type-II Dirac semi-metal. Though millimeter size of PtSe2 single crystal grown via chemical vapor transport method has been reported, lack of large high quality single crystal hinders the further experimental research on this type-II Dirac fermions system. Here we report a successful CuSe flux method to grow PtSe2 single crystal with large size of 5 mm × 5 mm × 3 mm. Transport properties of grown PtSe2 single crystal are characterized.
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