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19 papers · 2 filters
Spin excitations in the kagome-lattice metallic antiferromagnet FeCoSn
Tao Xie, Qiangwei Yin, Qi Wang +7
Kagome-lattice materials have attracted tremendous interest due to the broad prospect for seeking superconductivity, quantum spin liquid states, and topological electronic structur…
Correlation driven near-flat band Stoner excitations in a Kagome magnet
Abhishek Nag, Yiran Peng, Jiemin Li +9
Among condensed matter systems, Mott insulators exhibit diverse properties that emerge from electronic correlations. In itinerant metals, correlations are usually weak, but can als…
The competition between antiferromagnetism and superconductivity in a doped Hubbard model with anisotropic interaction
Runyu Ma, Tianxing Ma
The competition between antiferromagnetism and superconductivity is one of the central questions in the research of strong correlated systems. In this work, we utilize a double lay…
An intermediate phase induced by dilution in a correlated Dirac Fermi system
Lingyu Tian, Jingyao Meng, Tianxing Ma
Substituting magnetic ions with nonmagnetic ions is a new way to study dilution. Using determinant quantum Monte Carlo calculations, we investigate an interacting Dirac fermion mod…
Emergent Anti-ferromagnetism in a Y -Shaped Kekulé Graphene
Chenyue Wen, Wanpeng Han, Xukun Feng +5
Antiferromagnetic (AF) transitions of birefringent Dirac fermions created by a Y-shaped Kekulé distortion in graphene are investigated by the mean-field theory and the determinant…
Transport anisotropy and metal-insulator transition in striped Dirac fermion systems
Jingyao Meng, Runyu Ma, Lufeng Zhang +1
Using the determinant quantum Monte Carlo method, we investigate the metal-insulator transitions induced by the stripe of charge density in an interacting two-dimensional Dirac fer…