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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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