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arXiv · 2201.08829

Tunable Chirality-dependent Nonlinear Electrical Responses in 2D Tellurium

Chang Niu·Gang Qiu·Yixiu Wang·Pukun Tan·Mingyi Wang·Jie Jian·Haiyan Wang·Wenzhuo Wu·Peide D. Ye
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Abstract

Tellurium (Te) is an elemental semiconductor with a simple chiral crystal structure. Te in a two-dimensional (2D) form synthesized by solution-based method shows excellent electrical, optical, and thermal properties. In this work, the chirality of hydrothermally grown 2D Te is identified and analyzed by hot sulfuric acid etching and high-angle tilted high-resolution scanning transmission electron microscopy. The gate-tunable nonlinear electrical responses, including the nonreciprocal electrical transport in the longitudinal direction and the nonlinear planar Hall effect in the transverse direction, are observed in 2D Te under a magnetic field. Moreover, the nonlinear electrical responses have opposite signs in left- and right-handed 2D Te due to the opposite spin polarizations ensured by the chiral symmetry. The fundamental relationship between the spin-orbit coupling and the crystal symmetry in two enantiomers provides a viable platform for realizing chirality-based electronic devices by introducing the chirality degree of freedom into electron transport.

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Chang Niu, Gang Qiu, Yixiu Wang, Pukun Tan, Mingyi Wang, Jie Jian, Haiyan Wang, Wenzhuo Wu, Peide D. Ye. 2022-01-21. Tunable Chirality-dependent Nonlinear Electrical Responses in 2D Tellurium. https://doi.org/10.1021/acs.nanolett.3c01797

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