Surface Effects on the Properties of Screw Dislocation in Nanofilms

Table 2

The unstable stacking fault energy (in units of mJ/m²), core structure parameter , core width (in units of ), and Peierls stress (in units of ) of the screw dislocations in Al and Cu nanofilms.

Nanofilms	Al				Cu
		379.8	0.64	0.644	0.172	503.7	0.350	0.351	6.295
	356.2	0.69	0.693	0.147	498.4	0.357	0.357	6.109
	343.7	0.73	0.721	0.131	498.1	0.361	0.361	6.033
Bulk	339.4	0.79	0.792	0.118	495.7	0.371	0.391	5.850