DMFT study of the local correlation effects in quasi-periodic system
DMFT study of the local correlation effects in quasi-periodic system
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准周期系统局部相关效应的DMFT研究
DOI：
10.1088/1742-6596/592/1/012038
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
N. Takemori and A. Koga
中科院分区：
文献类型：
--
作者：
中山和貴;松井朋裕;Eric Lebrasseur;三田吉郎;福山寛;N. Takemori and A. Koga
利用实空间动力学平均场理论，研究了PenRose晶格上的二维Hubbard模型。通过计算每个格点的重整化因子和态密度，我们讨论了准周期结构上的局域电子关联。研究发现，在Penrose晶格系统中，重整化的金属态出现在Mott相变附近。我们还讨论了准周期晶格的空间相关重整化特征。
We study a two-dimensional Hubbard model on a Penrose lattice by means of the real-space dynamical mean-field theory. Calculating the renormalization factor and density of states at each site, we discuss local electron correlations on the quasi-periodic structure. It is found that the renormalized metallic state appears near the Mott transition in the Penrose lattice system. We also address a spatially-dependent renormalization characteristic of the quasi-periodic lattice.