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arXiv · 2510.22153

Electric-Field-Tunable Luttinger compensated antiferromagnetism in double CrCl2 chains

Deping Guo·Weihan Zhang·Canbo Zong·Cong Wang·Wei Ji
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Abstract

Luttinger compensated antiferromagnets (LcAFMs), combining spin polarization with vanishing net magnetization, offering distinct advantages for next-generation spintronic applications. Using first-principles calculations, we demonstrate that conventional antiferromagnetic CrCl2 double chains can be transformed into one-dimensional LcAFMs under an external electric field, exhibiting pronounced isotropic spin splitting. The magnitude of the splitting, as well as the band gap, can be effectively tuned by both in-plane and out-of-plane fields, thereby providing greater controllability than in two-dimensional counterparts. To further enhance the tunability, we design a nearly lattice-matched CrCl2/MoTe2 heterostructure and uncover that interfacial charge transfer generates a built-in electric field, inducing spin splitting comparable to that driven by external fields. These results establish interfacial engineering as a highly efficient route to realize and manipulate LcAFM states in low-dimensional magnets, expanding the design principles for spintronic functionalities at the nanoscale.

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Deping Guo, Weihan Zhang, Canbo Zong, Cong Wang, Wei Ji. 2025-10-25. Electric-Field-Tunable Luttinger compensated antiferromagnetism in double CrCl2 chains. https://arxiv.org/abs/2510.22153

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