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• W2763804563 abstract "The phenomenon associated with inhomogeneous distribution of electron density is known as a charge ordering. In this work, we study the zero-bandwidth limit of the extended Hubbard model, which can be considered as a simple effective model of charge ordered insulators. It consists of the on-site interaction $U$ and the intersite density-density interactions $W_1$ and $W_2$ between nearest-neighbors and next-nearest neighbors, respectively. We derived the exact ground state diagrams for different lattice dimensionalities and discuss effects of small finite temperatures in the limit of high dimensions. In particular, we estimated the critical interactions for which new ordered phases emerge (laminar or stripe and four-sublattice-type). Our analysis show that the ground state of the model is highly degenerated. One of the most intriguing finding is that the nonzero temperature removes these degenerations." @default.
• W2763804563 created "2017-10-20" @default.
• W2763804563 creator A5023750266 @default.
• W2763804563 creator A5057412956 @default.
• W2763804563 creator A5074827402 @default.
• W2763804563 date "2017-10-04" @default.
• W2763804563 modified "2023-10-15" @default.
• W2763804563 title "Diversity of charge orderings in correlated systems" @default.
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• W2763804563 doi "https://doi.org/10.1103/physreve.96.042104" @default.
• W2763804563 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29347509" @default.
• W2763804563 hasPublicationYear "2017" @default.
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