Details

Autor(en) / Beteiligte

• Shi, Yanmeng
• Che, Shi
• Zhou, Kuan
• Ge, Supeng
• Pi, Ziqi
• Espiritu, Timothy
• Taniguchi, Takashi
• Watanabe, Kenji
• Barlas, Yafis
• Lake, Roger
• Lau, Chun Ning

Titel

Tunable Lifshitz Transitions and Multiband Transport in Tetralayer Graphene

Ist Teil von

• Physical review letters, 2018-02, Vol.120 (9), p.096802-096802, Article 096802

Ort / Verlag

United States: American Physical Society

Erscheinungsjahr

2018

Quelle

American Physical Society

Beschreibungen/Notizen

• As the Fermi level and band structure of two-dimensional materials are readily tunable, they constitute an ideal platform for exploring the 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 a nonmonotonic dependence of conductivity on the charge density n and out-of-plane electric field D, anomalous quantum Hall sequences and Landau level crossings that evolve with n, D, and B.