heterostructures: Application for spintronic and resonant tunneling*

Bonding geometry engineering of metal-oxide octahedral is a simple way of designing various functional properties of transition metal oxides. Several methods, stoichiometry control, epitaxial strain, and thickness have been proposed. But these ways accompanied structural modifications. In this work, we proposed the concept of octahedral tilt engineering using atomically designed SrRuO₃/SrTiO₃​​​​​​.

 we fabricate nanolayer designing of the SrRuO₃/SrTiO₃ superlattices. In particular, the six-unit-cell-thick SrRuO₃ layers within the superlattices undergo a phase transition in crystalline symmetry from orthorhombic to tetragonal as the thickness of the SrTiO₃ layers is increase, which can be resulted in enhancing the magnetic moment and making discrete energy state of SrRuO₃ metal layers. And evaluate both magnetotransport and vertical transport of SrRuO₃/SrTiO₃ superlattices. Consequently, the magnetic anisotropy can be manipulated by structure modulation of SrRuO₃. Furthermore, vertical transport of oxide superlattices suggest understanding the correlation between oxide thickness and vertical devices performance