Observation of Superconductivity in the LaNiO/LaSrMnO Superlattice.

In the pursuit of high-temperature superconductivity like that in cuprates, artificial heterostructures or interfaces have attracted tremendous interest. It has been a long-sought goal to find similar unconventional superconductivity in nickelates. However, as far as we know, this has not yet been experimentally realized.

Exchange Bias Effect and Orbital Reconstruction in (001)-Oriented LaMnO/LaNiO Superlattices.

Paramagnetic LaNiO (LNO)-based heterostructures have been attracting the attention of researches, especially since the interesting exchange bias (EB) effect has been observed in (111)-oriented LaMnO (LMO)/LNO superlattices (SLs). However, this effect is not expected to occur in the (001) direction SLs. In this paper, we report the observation of an unexpected EB effect in (001)-oriented (LMO)/(LNO) SLs.

The Exchange Bias of LaMnO/LaNiO Superlattices Grown along Different Orientations.

With the goal of observing and explaining the unexpected exchange bias effect in paramagnetic LaNiO-based superlattices, a wide range of theoretical and experimental research has been published. Within the scope of this work, we have grown high-quality epitaxial LaMnO(n)-LaNiO(n) (LMO/LNO) superlattices (SLs) along (001)-, (110)-, and (111)-oriented SrTiO substrates. The exchange bias effect is observed in all cases, regardless of growth orientation of the LMO/LNO SLs.