Room temperature epitaxial stabilization of a tetragonal phase in ARuO3 (A= Ca and Sr) thin films
We demonstrate that Sr Ru O 3 and Ca Ru O 3 thin films undergo a room temperature
structural phase transition driven by the substrate imposed epitaxial biaxial strain. As tensile
strain increases, A Ru O 3 ( A= Ca and Sr) films transform from the orthorhombic phase
which is usually observed in bulk Sr Ru O 3 and Ca Ru O 3 at room temperature into a
tetragonal phase which in bulk samples is only stable at higher temperatures. More
importantly, we show that the observed phenomenon strongly affects the electronic and …
structural phase transition driven by the substrate imposed epitaxial biaxial strain. As tensile
strain increases, A Ru O 3 ( A= Ca and Sr) films transform from the orthorhombic phase
which is usually observed in bulk Sr Ru O 3 and Ca Ru O 3 at room temperature into a
tetragonal phase which in bulk samples is only stable at higher temperatures. More
importantly, we show that the observed phenomenon strongly affects the electronic and …
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