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Infrared probe of the anomalous magnetotransport of highly oriented pyrolytic graphite in the extreme quantum limit

Z. Q. Li·S. -W. Tsai·W. J. Padilla·S. V. Dordevic·K. S. Burch·Y. J. Wang·D. N. Basov
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Abstract

We present a systematic investigation of the magnetoreflectance of highly oriented pyrolytic graphite in magnetic field B up to 18 T . From these measurements, we report the determination of lifetimes tau associated with the lowest Landau levels in the quantum limit. We find a linear field dependence for inverse lifetime 1/tau(B) of the lowest Landau levels, which is consistent with the hypothesis of a three-dimensional (3D) to 1D crossover in an anisotropic 3D metal in the quantum limit. This enigmatic result uncovers the origin of the anomalous linear in-plane magnetoresistance observed both in bulk graphite and recently in mesoscopic graphite samples.

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Z. Q. Li, S. -W. Tsai, W. J. Padilla, S. V. Dordevic, K. S. Burch, Y. J. Wang, D. N. Basov. 2006-11-10. Infrared probe of the anomalous magnetotransport of highly oriented pyrolytic graphite in the extreme quantum limit. https://doi.org/10.1103/physrevb.74.195404

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