Magnetic correlations in the Hubbard model on triangular and Kagomé lattices.
Magnetic correlations in the Hubbard model on triangular and Kagomé lattices.
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DOI：
10.1103/physrevlett.95.037001
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发表时间：
2005-02
影响因子：
8.6
通讯作者：
N. Bulut;W. Koshibae;S. Maekawa
中科院分区：
文献类型：
--
作者：
N. Bulut;W. Koshibae;S. Maekawa
为了研究受挫金属系统的磁性，我们首次提出了三角晶格和 Kagomé 晶格上哈伯德模型磁化率的量子蒙特卡罗数据。我们表明，底层晶格结构决定了磁涨落的性质和掺杂依赖性。特别是，在掺杂 Kagomé 情况下，我们发现了很强的短程磁相关性，这使得金属 Kagomé 系统成为超导研究的一个有前景的领域。
In order to study the magnetic properties of frustrated metallic systems, we present, for the first time, quantum Monte Carlo data on the magnetic susceptibility of the Hubbard model on triangular and kagomé lattices. We show that the underlying lattice structure determines the nature and the doping dependence of the magnetic fluctuations. In particular, in the doped kagomé case we find strong short-range magnetic correlations, which makes the metallic kagomé systems a promising field for studies of superconductivity.