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Effects of nanoscale spatial inhomogeneity in strongly correlated systems
Abstract
We calculate ground-state energies and density distributions of Hubbard superlattices characterized by periodic modulations of the on-site interaction and the on-site potential. Both density-matrix renormalization group and density-functional methods are employed and compared. We find that small variations in the on-site potential ν i can simulate, cancel, or even overcompensate effects due to much larger variations in the on-site interaction U i. Our findings highlight the importance of nanoscale spatial inhomogeneity in strongly correlated systems, and call for a reexamination of model calculations assuming spatial homogeneity. ©2005 The American Physical Society.
How to cite this document
Silva, M. F. et al. Effects of nanoscale spatial inhomogeneity in strongly correlated systems. Physical Review B - Condensed Matter and Materials Physics, v. 71, n. 12, 2005. Available at: <http://hdl.handle.net/11449/224559>.
Language
English
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