TY - JOUR
T1 - Design of a Mott Multiferroic from a Nonmagnetic Polar Metal
AU - Puggioni, Danilo
AU - Giovannetti, Gianluca
AU - Capone, Massimo
AU - Rondinelli, James M.
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/8/20
Y1 - 2015/8/20
N2 - We examine the electronic properties of the newly discovered "ferroelectric metal" LiOsO3 combining density-functional and dynamical mean-field theories. We show that the material is close to a Mott transition and that electronic correlations can be tuned to engineer a Mott multiferroic state in the 1/1 superlattice of LiOsO3 and LiNbO3. We use electronic structure calculations to predict that the (LiOsO3)1/(LiNbO3)1 superlattice exhibits strong coupling between magnetic and ferroelectric degrees of freedom with a ferroelectric polarization of 41.2 μC cm-2, Curie temperature of 927 K, and Néel temperature of 379 K. Our results support a route towards high-temperature multiferroics, i.e., driving nonmagnetic polar metals into correlated insulating magnetic states.
AB - We examine the electronic properties of the newly discovered "ferroelectric metal" LiOsO3 combining density-functional and dynamical mean-field theories. We show that the material is close to a Mott transition and that electronic correlations can be tuned to engineer a Mott multiferroic state in the 1/1 superlattice of LiOsO3 and LiNbO3. We use electronic structure calculations to predict that the (LiOsO3)1/(LiNbO3)1 superlattice exhibits strong coupling between magnetic and ferroelectric degrees of freedom with a ferroelectric polarization of 41.2 μC cm-2, Curie temperature of 927 K, and Néel temperature of 379 K. Our results support a route towards high-temperature multiferroics, i.e., driving nonmagnetic polar metals into correlated insulating magnetic states.
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U2 - 10.1103/PhysRevLett.115.087202
DO - 10.1103/PhysRevLett.115.087202
M3 - Article
C2 - 26340204
AN - SCOPUS:84940753123
SN - 0031-9007
VL - 115
JO - Physical review letters
JF - Physical review letters
IS - 8
M1 - 087202
ER -