Abstract
Recently, two-dimensional (2D) bilayer magnetic systems have been widely studied. Their interlayer magnetic interactions play a vital role in the magnetic properties. In this paper, we theoretically studied the interlayer magnetic interactions, magnetic states, and ferroelectricity of π/3-twisted CrX2 (X = Se, Te) bilayers (π/3-CrX2). Our study reveals that the lateral shift could switch the magnetic state of the π/3-CrSe2 between interlayer ferromagnetic and antiferromagnetic, while just tuning the strength of the interlayer antiferromagnetic interactions in π/3-CrTe2. Furthermore, the lateral shift can alter the off-plane electric polarization in both π/3-CrSe2 and π/3-CrTe2. These results show that stacking is an effective way to tune both the magnetic and ferroelectric properties of 1T-CrX2 bilayers, making the 1T-CrX2 bilayers hold promise for 2D spintronic devices.
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