We report the synthesis of CeBi single crystals out of Bi self flux and a systematic study of the magnetic and transport properties with varying temperature and applied magnetic fields. From these R(T,H) and M(T,H) data we could assemble the field-temperature (H−T) phase diagram for CeBi and visualize the three dimensional M−T−H surface. In the phase diagram, we identify regions with well defined magnetization values, and identify a new phase region. The magnetoresistance (MR) in the low temperature regime shows, above 6T a power-law, non-saturated behavior with large MR (∼3×105% at 2K and 13.95T), along with Shubnikov-de Haas oscillations. With increasing temperatures, MR decreases, and then becomes negative for T≳10K. This crossover in MR seems to be unrelated to any specific magnetic or metamagnetic transitions, but rather is associated with changing from a low-temperature normal metal regime with little or no scattering from the Ce3+ moments and an anomalously large MR, to an increased scattering from local Ce moments and a negative MR as temperature increases.
@article{arxiv.1912.08896,
title = {Magnetization and magneto-transport measurements on CeBi single crystals},
author = {Brinda Kuthanazhi and Na Hyun Jo and Li Xiang and Sergey L. Bud'ko and Paul C. Canfield},
journal= {arXiv preprint arXiv:1912.08896},
year = {2021}
}