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Title: Tunable Lifshitz Transitions and Multiband Transport in Tetralayer Graphene

Journal Article · · Physical Review Letters
 [1];  [2];  [1];  [1];  [1];  [1];  [3];  [3];  [1];  [1];  [2]
  1. Univ. of California, Riverside, CA (United States)
  2. Univ. of California, Riverside, CA (United States); Ohio State Univ., Columbus, OH (United States)
  3. National Inst. for Material Science, Tsukuba (Japan)

To begin, 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 $$B$$.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Spins and Heat in Nanoscale Electronic Systems (SHINES)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012670; SC0010597
OSTI ID:
1470263
Alternate ID(s):
OSTI ID: 1423175
Journal Information:
Physical Review Letters, Vol. 120, Issue 9; Related Information: SHINES partners with University of California, Riverside (lead); Arizona State University; Colorado State University; Johns Hopkins University; University of California Irvine; University of California Los Angeles; University of Texas at Austin; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (3)

Large tunable intrinsic gap in rhombohedral-stacked tetralayer graphene at half filling journal August 2018
Topological transitions in a model for proximity-induced superconductivity journal December 2019
Emergent Dirac Gullies and Gully-Symmetry-Breaking Quantum Hall States in A B A Trilayer Graphene journal October 2018