Figure 2: Displacement fields of Ni(1 1 19) and Cu(1 1 19) surfaces are shown. | Scientific Reports

Figure 2: Displacement fields of Ni(1 1 19) and Cu(1 1 19) surfaces are shown.

From: A comparison of the uniaxial deformation of copper and nickel (1 1 19) surfaces: a molecular dynamics study

Figure 2

Arrows show the displacements of the atoms from their bulk positions (multiplied by 100 for clarity). Surface atoms are traced by grey lines. Dashed lines mark the (111) planes. The general regions of the displacement vortices are circled. In the case of the Ni(1 1 19) surface (a) some of the terrace atoms are displaced towards the bulk and others away from the bulk. The step corner and terrace edge atoms are displaced the most and the atoms in the middle of the terrace are displaced the least. The vortex is centered on the (111) plane marked with a dashed line. In the case of the Cu(1 1 19) surface (b) all the terrace atoms are displaced towards the bulk, whereas the step corner atom is displaced outwards. The displacements form a vortex underneath the terrace.

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