Double Dirac Semimetals in Three Dimensions

PHYSICAL REVIEW LETTERS, no. 18 (2016)

Cited: 130|Views31
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Abstract

We study a class of Dirac semimetals that feature an eightfold-degenerate double Dirac point. We show that 7 of the 230 space groups can host such Dirac points and argue that they all generically display linear dispersion. We introduce an explicit tight-binding model for space groups 130 and 135. Space group 135 can host an intrinsic doub...More

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