title: High magnetic field induced charge density waves and sign reversal of the Hall coefficient in graphite.
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.
authors.affiliation: Laboratoire National des Champs Magnétiques Intenses, Université de Toulouse, INSA, UPS, CNRS-UPR3228, 143 avenue de rangueil, 31400 Toulouse, France. amit.kumar@lncmi.cnrs.fr
authors.forename: Amit
authors.initials: A
authors.lastname: Kumar
authors.forename: Jean-Marie
authors.initials: JM
authors.lastname: Poumirol
authors.forename: Walter
authors.initials: W
authors.lastname: Escoffier
authors.forename: Michel
authors.initials: M
authors.lastname: Goiran
authors.forename: Bertrand
authors.initials: B
authors.lastname: Raquet
authors.forename: Jean
authors.initials: J
authors.lastname: Claude Pivin