We experimentally investigate third-order nonlinear Hall effect for three-dimensional NiTe2 single crystal samples. NiTe2 is the recently discovered type-II Dirac semimetal, so both the inversion and the time-reversal symmetries are conserved in the bulk. As a result, the well known second-order nonlinear Hall effect does not expected for this material, which we confirm as negligibly small second-harmonic transverse Hall voltage response to the longitudinal ac electric current. As the main experimental result, we demonstrate the unsaturated third-harmonic Hall response in NiTe2, which well corresponds to the theoretically predicted third-order nonlinear Hall effect in Dirac semimetals. We also demonstrate, that the third harmonic signal does not depend on the external magnetic field, in contrast to the field-depended first-order and second-order Hall effects.
@article{arxiv.2502.08223,
title = {Demonstration of the third-order nonlinear Hall effect in topological Dirac semimetal NiTe$_2$},
author = {V. D. Esin and A. V. Timonina and N. N. Kolesnikov and E. V. Deviatov},
journal= {arXiv preprint arXiv:2502.08223},
year = {2025}
}