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@article{748741, author = {Chaloupka, Jiří and Khaliullin, Giniyat}, article_location = {USA}, article_number = {1}, keywords = {orbital order; superlattices; superconductivity; strong correlations}, language = {eng}, issn = {0031-9007}, journal = {Physical Review Letters}, title = {Orbital Order and Possible Superconductivity in LaNiO3/LaMO3 Superlattices}, volume = {100}, year = {2008} }
TY - JOUR ID - 748741 AU - Chaloupka, Jiří - Khaliullin, Giniyat PY - 2008 TI - Orbital Order and Possible Superconductivity in LaNiO3/LaMO3 Superlattices JF - Physical Review Letters VL - 100 IS - 1 SP - 016404 EP - 016404 PB - The Americal Physical Society SN - 00319007 KW - orbital order KW - superlattices KW - superconductivity KW - strong correlations N2 - A hypothetical layered oxide La2NiMO6 where NiO2 and MO2 planes alternate along the c axis of ABO3 perovskite lattice is considered theoretically. Here, M denotes a trivalent cation Al, Ga, etc such that MO2 planes are insulating and suppress the c-axis charge transfer. We predict that correlated eg electrons in the NiO2 planes develop a planar x2-y2 orbital order driven by the reduced dimensionality and further supported by epitaxial strain from the substrate. Low-energy electronic states can be mapped to a single-band t-t'-J model, suggesting favorable conditions for high-Tc superconductivity. ER -
CHALOUPKA, Jiří and Giniyat KHALIULLIN. Orbital Order and Possible Superconductivity in LaNiO3/LaMO3 Superlattices. \textit{Physical Review Letters}. USA: The Americal Physical Society, 2008, vol.~100, No~1, p.~016404-16407. ISSN~0031-9007.
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