Graphite exhibits multi-stage phase transitions in the quantum-limit states realized by magnetic fields applied along the c-axis. Despite extensive studies on this phenomenon, the origin remains a matter of debate to this day. We performed high-field magnetotransport measurements on single crystals of graphite, focusing on the non-linear conductivity in pulsed-magnetic fields of up to 75 T. The longitudinal magnetoresistance exhibits distinct non-linearity not only in the first but also in the second field-induced phases.
@article{arxiv.2512.12956,
title = {Non-linear transport in field-induced insulating states of graphite},
author = {Masashi Tokunaga and Kazuto Akiba and Hiroshi Yaguchi and Akira Matsuo and Koichi Kindo},
journal= {arXiv preprint arXiv:2512.12956},
year = {2025}
}