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arXiv · 2502.08223

Demonstration of the third-order nonlinear Hall effect in topological Dirac semimetal NiTe$_2$

V. D. Esin·A. V. Timonina·N. N. Kolesnikov·E. V. Deviatov
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Abstract

We experimentally investigate third-order nonlinear Hall effect for three-dimensional NiTe$_2$ single crystal samples. NiTe$_2$ 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 NiTe$_2$, 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.

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V. D. Esin, A. V. Timonina, N. N. Kolesnikov, E. V. Deviatov. 2025-02-12. Demonstration of the third-order nonlinear Hall effect in topological Dirac semimetal NiTe$_2$. https://doi.org/10.31857/s004445102506015x

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