Effects of in-plane stiffness and charge transfer on thermal expansion of monolayer transition metal dichalcogenide<xref ref-type="fn" rid="cpb141703fn1">*</xref>

Effects of in-plane stiffness and charge transfer on thermal expansion of monolayer transition metal dichalcogenide*

Wang Zhan-Yu^a),^b), Zhou Yan-Li^c), Wang Xue-Qing^b), Wang Fei^a),^b), Sun Qiang^a),^b), Guo Zheng-Xiao^a),^b),^d), Jia Yu^a),^b)†

Frequencies of the optical modes at Γ -point for monolayer STMD. Experimental data are cited from Refs. [ 35 ], [ 40 ], and [ 41 ]. The insets show the symmetry representations and the corresponding atomic displacements.