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arXiv · 1411.7067

Local Electron Correlations in a Two-dimensional Hubbard Model on the Penrose Lattice

Nayuta Takemori·Akihisa Koga
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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.

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Nayuta Takemori, Akihisa Koga. 2014-11-25. Local Electron Correlations in a Two-dimensional Hubbard Model on the Penrose Lattice. https://doi.org/10.7566/jpsj.84.023701

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