Strain
 engineering
 in 
epitaxial 
heterostructures

 

Strain fields generated at the interface of two dissimilar ferroelastic oxides induce a structural cubic-to-tetragonal phase

transition. Using Landau theory for the distrortion of the strain fields we found analytically that the dilatational strain

exhibits compression close to the interface that in turn may affect drastically the electronic properties in the vicinity of the interface.

PRB 84, 245428 (2011)