Evidence of Lifshitz transition in thermoelectric power of ultrahigh mobility bilayer graphene
arXiv:2003.02880 · doi:10.1021/acs.nanolett.0c03586
Abstract
Resolving low-energy features in the density of states (DOS) holds the key to understanding wide variety of rich novel phenomena in graphene based 2D heterostructures. Lifshitz transition in bilayer graphene (BLG) arising from trigonal warping has been established theoretically and experimentally. Nevertheless, the experimental realization of its effects on the transport properties has been challenging because of its relatively low energy scale ( meV). In this work, we demonstrate that the thermoelectric power (TEP) can be used as an effective probe to investigate fine changes in the DOS of BLG. We observe additional entropy features in the vicinity of the charge neutrality point (CNP) in gapped BLG. This apparent violation of Mott formula can be explained quantitatively by considering the effects of trigonal warping, thereby serving as a possible evidence of a Lifshitz transition.
References in corpus (35)
- Boron nitride substrates for high-quality graphene electronics
- Gate-induced insulating state in bilayer graphene devices
- The electronic properties of bilayer graphene
- Commensurate-incommensurate transition for graphene on hexagonal boron nitride
- Thermoelectric and Magnetothermoelectric Transport Measurements of Graphene
- Interaction-Driven Spectrum Reconstruction in Bilayer Graphene
- Electronic Transport in Dual-gated Bilayer Graphene at Large Displacement Fields
- Strained bilayer graphene: Band structure topology and Landau level spectrum
- Ferromagnetic superconductivity driven by changing Fermi surface topology
- Influence of disorder on conductance in bilayer graphene under perpendicular electric field
- Resistivity in the Vicinity of a Van Hove Singularity: SrRuO Under Uniaxial Pressure
- High-Field Superconductivity at an Electronic Topological Transition in URhGe
- Transport in gapped bilayer graphene: the role of potential fluctuations
- Enhanced superconductivity accompanying a Lifshitz transition in electron-doped FeSe monolayer
- Enhanced Thermoelectric Power in Dual-Gated Bilayer Graphene
- Anomalous sequence of quantum Hall liquids revealing tunable Lifshitz transition in bilayer graphene
- Charge transport in dual gated bilayer graphene with Corbino geometry
- Thermoelectric Transport of Massive Dirac Fermions in Bilayer Graphene
- Large Enhancement of Thermoelectric Efficiency Due to a Pressure-Induced Lifshitz Transition in SnSe
- Seebeck Coefficient of a Single van der Waals Junction in Twisted Bilayer Graphene
- Topological Lifshitz Transitions and Fermi Arc Manipulation in Weyl Semimetal NbAs
- Lifshitz Transition in Underdoped Cuprates
- Evidence of Coulomb interaction induced Lifshitz transition and robust hybrid Weyl semimetal in Td MoTe2
- Anomalous growth of thermoelectric power in gapped graphene
- Mis-orientation controlled cross-plane thermoelectricity in twisted bilayer graphene
- Quantum Metamagnetic Transitions Induced by Changes in Fermi-Surface Topology -Applications to a Weak Itinerant-Electron Ferromagnet;ZrZn_2
- Determination of the trigonal warping orientation in Bernal-stacked bilayer graphene via scanning tunneling microscopy
- Distribution Function Analysis of Mesoscopic Hopping Conductance Fluctuations
- Probing the nanoscale origin of strain and doping in graphene-hBN heterostructures
- Detection of topological phase transitions through entropy measurements: the case of germanene
- Lifshitz transition and thermoelectric properties of bilayer graphene
- Marginal topological properties of graphene: a comparison with topological insulators
- Marginally Self-Averaging One-Dimensional Localization in Bilayer Graphene
- Thermoelectric properties of gapped bilayer graphene
- Entropy Signatures of Topological Phase Transitions
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- Excess entropy and breakdown of semiclassical description of thermoelectricity in twisted bilayer graphene close to half filling
- Thermoelectric properties of the Corbino disk in graphene
- Sliding-induced topological transitions in bilayer biphenylene
- Sub-Sharvin conductance and incoherent shot-noise in graphene disks at magnetic field