The Lifshitz transition from type-I to type-II Weyl states is equivalent to a black hole horizon, featuring a Dirac-line Fermi surface with nontrivial topological invariant and critical chiral anomaly.
Discovery of Lorentz-violating Weyl fermion semimetal state in LaAlGe materials
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abstract
We report theoretical and experimental discovery of Lorentz-violating Weyl fermion semimetal type-II state in the LaAlGe class of materials. Previously type-II Weyl state was predicted in WTe2 materials which remains unrealized in surface experiments. We show theoretically and experimentally that LaAlGe class of materials are the robust platforms for the study of type-II Weyl physics.
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cond-mat.mes-hall 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
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Dirac-Line Criticality and Emergent Horizons in Weyl Lifshitz Transitions
The Lifshitz transition from type-I to type-II Weyl states is equivalent to a black hole horizon, featuring a Dirac-line Fermi surface with nontrivial topological invariant and critical chiral anomaly.