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\subsubsection{\texorpdfstring{Stacking Configurations of MX\$\_2\$}{Stacking Configurations of MX_2}}
\label{sec:stacking_configurations_of_mx_2}


We investigate the effect of the interlayer interaction on the structural and electronic properties of layered MX\textsubscript{2}(M=Ti, Zr, Hf, Cr, Mo, W) structures with van der Waals interaction. We calculate the relative stability of various layer-layer stacking configurations determined by considering relative positions and orientations between neighboring layers. It is found that an intriguing coupling effect between stacking and electronic structure. Some stacking configuration with a lager inter-layer distance exhibit larger electronic band gap than the other structures.

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