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The shape memory effect and pseudoelasticity in Cu nanowires is one possiblepair of mechanisms that prevents high aspect ratio nanosized field electronemitters to be stable at room temperature and permits their growth under highelectric field. By utilizing hybrid electrodynamics molecular dynamicssimulations we show that a global electric field of 1 GV/m or moresignificantly increases the stability and critical temperature of spontaneousreorientation of nanosized <100> Cu field emitters. We also show that in thestudied tips the stabilizing effect of an external applied electric field is anorder of magnitude greater than the destabilization caused by the fieldemission current. We detect the critical temperature of spontaneousreorientation using the tool that spots the changes in crystal structure. Themethod is compatible with techniques that consider the change in potentialenergy, has a wider range of applicability and allows pinpointing differentstages in the reorientation processes.

Electrodynamics - molecular dynamics simulations of the stability of Cu nanotips under high electric field