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Periodic geometrical arrangement of the constituent atoms in a crystalline
solid is the backbone of electronic and magnetic properties. The alternation of
this atomic arrangement, by creating interface between two chemically,
electronically and structurally dissimilar materials can be expected to result a set
of many-body states, which are unattainable in the constituent bulk materials. As
the strong intercoupling among spin, charge, orbital, lattice degrees of freedom in
correlated oxides promote various fascinating collective phenomena (e.g.
superconductivity, magnetism, ferrolectricity ...), the additional broken
symmetries and frustrated couplings across interface may give rise to a new
horizon to novel electronic, magnetic and topological states. However, microscopic
understanding of such interfacial properties is a grand challenge and it requires
various advanced techniques.
In this talk, I will illustrate the success in creating `new’ electronic states
by growing transition metal oxide superlattices with unit cell precision. The
implementation of synchrotron diffraction, x-ray absorption spectroscopy,
resonant x-ray scattering experiments to elucidate the response of the underlying
structures, spins, orbitals and charges due to this heterostructuring will be also
discussed. Additionally, I will present the prospect of such engineered
heterointerfaces for energy harvesting and application as next generation
materials for Mott electronics. |