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Updated: Jun 3, 2026

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
Published on: January 21, 2016
High magnetic field induced charge density waves and sign reversal of the Hall coefficient in graphite
Amit Kumar1, Jean-Marie Poumirol, Walter Escoffier
1Laboratoire National des Champs Magnétiques Intenses, Université de Toulouse, INSA, UPS, CNRS-UPR3228, 143 avenue de rangueil, 31400 Toulouse, France. amit.kumar@lncmi.cnrs.fr
Abstract:
We report on the investigation of magnetic field induced charge density waves and Hall coefficient sign reversal in a quasi-two-dimensional electronic system of highly oriented pyrolytic graphite under very strong magnetic field. The change of Hall sign coefficient from negative to positive occurs at low temperature and high magnetic field just after the charge density wave transition, suggesting the role of hole-like quasi-particles in this effect. Angular dependent measurements show that the charge density wave transition and Hall sign reversal fields follow the magnetic field component along the c-axis of graphite.
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