Mechanical anisotropy and electronic properties of X2N2 (XH2 ): first-principles calculations*

Xiao-Zhen Li(李小珍),Meng-Jiang Xing(邢孟江)

Table 3. The calculated density (g cm−3 ), the longitudinal, transverse and mean wave velocity (v s , v p , v m in m s−1 ), and the Debye temperature (K) for X2 N2 (XH2 ) (X = C, Si, Ge).

ρ v p v s v m ΘD C2 N2 (CH2 ) 2.8186 13 508 8590 9445 1589 Si2 N2 (SiH2 ) 2.3815 9041 5344 5920 849 Ge2 N2 (GeH2 ) 4.3931 5725 3407 3772 474