Collinear antiferromagnetic state in a two-dimensional Hubbard model at half filling
Collinear antiferromagnetic state in a two-dimensional Hubbard model at half filling
复制标题
半填充二维哈伯德模型中的共线反铁磁态
DOI：
10.1103/physrevb.81.195122
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发表时间：
2010-02
影响因子：
3.7
通讯作者：
Yin, Lan
中科院分区：
文献类型：
--
作者：
Yu, Zeng-Qiang;Yin, Lan
In a half-filled Hubbard model on a square lattice, the next-nearest-neighbor hopping causes spin frustration, and the collinear antiferromagnetic (CAF) state appears as the ground state with suitable parameters. We find that there is a metal-insulator transition in the CAF state at a critical on-site repulsion. When the repulsion is small, the CAF state is metallic, and a van Hove singularity can be close to the Fermi surface, resulting in either a kink or a discontinuity in the magnetic moment. When the on-site repulsion is large, the CAF state is a Mott insulator. A first-order transition from the CAF phase to the antiferromagnetic phase and a second-order phase transition from the CAF phase to the paramagnetic phase are obtained in the phase diagram at zero temperature.
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DOI：
10.1098/rspa.1963.0204
发表时间：
1963-01-01
影响因子：
--
作者：
HUBBARD, J
通讯作者：
HUBBARD, J
影响因子：
8.6
作者：
CHANDRA, P;COLEMAN, P;LARKIN, AI
通讯作者：
LARKIN, AI
影响因子：
3.7
作者：
Mizusaki, Takahiro;Imada, Masatoshi
通讯作者：
Imada, Masatoshi
影响因子：
3.7
作者：
A. Nevidomskyy;C. Scheiber;D. Sénéchal;A. Tremblay
通讯作者：
A. Nevidomskyy;C. Scheiber;D. Sénéchal;A. Tremblay
影响因子：
3.7
作者：
Jean-Yves P. Delannoy;M. Gingras;P. Holdsworth;A. Tremblay
通讯作者：
Jean-Yves P. Delannoy;M. Gingras;P. Holdsworth;A. Tremblay