Table 2: The Electronic and Structural Properties of α - Sn Crystal Obtained in the Present Work in Comparison with Other Results

Property	Computational		Experimental Value
	Present Work	Others
Lattice constant (a.u)	12.263	12.24 [2] 12.216 [1]	12.255 [30] (at R.T) 12.184 (at 0 K)
Cohesive energy (eV/atom)	-3.144	-2.8 [5] -3.723 [1]	-3.14 [27]
Valence band width (eV)	11.87	10.6 [5]	-----
Direct band gap (eV)	1.76	2.6 [5]	0.0 [31]
Conduction band width (eV)	5.2	------	-----
Hybridization state	s1.37 p2.63	-----	----