Effect of the electronic kinetic energy on the elastic strain in metallic multilayers

A recent theory of induced strain in metallic multilayers, caused by electron transfer effects, is revised by taking into account the electronic kinetic energy. When this is done, it is found that the predicted sign of the strain is opposite to what was found previously. For a multilayer having abrupt composition changes, the predicted magnitude of the strain is greater by a factor of 9/5 than what was found previously, whereas for a multilayer having smooth composition changes, it is the same as what was found previously.