Abstract

The metal-insulator transition on electronic transport properties and the extraordinarily large magnetoresistances (MR) at low temperature had been found in Kish graphite under low magnetic field. Along with the large ordinary magnetoresistances (MR), Kish graphite had clearly shown the reentrant metallic behavior at low temperature under 600 and 900 Oe applied magnetic fields. Besides a dominating ordinary MR (OMR) mechanism in the free-electron mode, the Coulomb interacting quasiparticles within graphite sheet play some role to extraordinarily large OMR.

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