Tunable Lifshitz Transitions and Multiband Transport in Tetralayer Graphene

Abstract

As the Fermi level and band structure of two-dimensional materials are readily tunable, they constitute an ideal platform for exploring Lifshitz transition, a change in the topology of a material's Fermi surface. Using tetralayer graphene that host two intersecting massive Dirac bands, we demonstrate multiple Lifshitz transitions and multiband transport, which manifest as non-monotonic dependence of conductivity on charge density n and out-of-plane electric fieldD, anomalous quantum Hall sequences and Landau level crossings that evolve with n, D and B.

arXiv commentaccepted to PRL

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Cited by in corpus (24)

• Chern Insulators and Topological Flat-bands in Magic-angle Twisted Bilayer Graphene
• Electronic phase separation in topological surface states of rhombohedral graphite
• Tunable van Hove Singularities and Correlated States in Twisted Trilayer Graphene
• Emergent Dirac gullies and gully-symmetry breaking quantum Hall states in ABA trilayer graphene
• Multilayer graphenes as a platform for interaction-driven physics and topological superconductivity
• Determination of the trigonal warping orientation in Bernal-stacked bilayer graphene via scanning tunneling microscopy
• Probing the tunable multi-cone bandstructure in Bernal bilayer graphene
• Spectroscopic signatures of tetralayer graphene polytypes
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