Local Electron Correlations in a Two-dimensional Hubbard Model on the Penrose Lattice
arXiv:1411.7067 · doi:10.7566/JPSJ.84.023701
Abstract
We study electron correlations in the half-filled Hubbard model on two-dimensional Penrose lattice. Applying the real-space dynamical mean-field theory to large clusters, we discuss how low-temperature properties are affected by the quasiperiodic structure. By calculating the double occupancy and renormalization factor at each site, we clarify the existence of the Mott transition. The spatially-dependent renormalization characteristic of geometrical structure is also addressed.
arXiv comment4 pages, 5 figures, accepted for publication in J. Phys. Soc. Jpn
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