Possible Fractional Quantum Hall Effect in Graphite

Abstract

Measurements of basal plane longitudinal rho_b(B) and Hall rho_H(B) resistivities were performed on highly oriented pyrolytic graphite (HOPG) samples in pulsed magnetic field up to B = 50 T applied perpendicular to graphene planes, and temperatures 1.5 K < T < 4.2 K. At B > 30 T and for all studied samples, we observed a sign change in rho_H(B) from electron- to hole-like. For our best quality sample, the measurements revealed the enhancement in rho_b(B) for B > 34 T (T = 1.8 K), presumably associated with the field-driven charge density wave or Wigner crystallization transition. Besides, well defined plateaus in rho_H(B) were detected in the ultra-quantum limit revealing the signatures of fractional quantum Hall effect in graphite.

15 pages, including 4 figures

References in corpus (8)

• Unconventional quantum Hall effect and Berry's phase of 2pi in bilayer graphene
• Phase analysis of quantum oscillations in graphite
• Graphene Physics in Graphite
• Two Dimensional Electron and Hole Gases at the Surface of Graphite
• Signatures of Electron Fractionalization in Ultraquantum Bismuth
• Dirac and Normal Fermions in Graphite and Graphene: Implications to the Quantum Hall Effect
• Theory of the Three Dimensional Quantum Hall Effect in Graphite
• Localized Distributions of Quasi Two-Dimensional Electronic States near Defects Artificially Created at Graphite Surfaces in Magnetic Fields

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• Tuning of Zero Energy States in Quantum Dots of Silicene and Bilayer Graphene by Electric Field
• Thickness-dependent phase transition in graphite under high magnetic field
• High magnetic field induced charge density waves and sign reversal of the Hall coefficient in graphite
• Nonintrinsic origin of the magnetic-field-induced metal-insulator and electronic phase transitions in graphite
• Quantum-Hall physics and three dimensions
• Ground-state atlas of a three-dimensional semimetal in the quantum limit
• Taming the magnetoresistance anomaly in graphite
• Quantum interference in a macroscopic van der Waals conductor
• Effects of Electron-Electron Interactions on Electronic Raman Scattering of Graphite in High Magnetic Fields
• Theory of metal-insulator transitions in graphite under high magnetic field
• Importance of the semimetallic state for the quantum Hall effect in HfTe${}_5$
• Exciton-driven quantum phase transitions in holography
• Holographic description of strongly correlated electrons in external magnetic fields