期刊
PHYSICAL REVIEW B
卷 89, 期 16, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.89.165134
关键词
-
资金
- U.S Department of Energy [DE-SC0008624, DE-SC0010530]
- DOE-CMCSN program [DE-SC0006613]
- NSF, MRSEC Award [NSF-DMR 0819860]
- U.S. Department of Energy (DOE) [DE-SC0008624, DE-SC0006613, DE-SC0010530] Funding Source: U.S. Department of Energy (DOE)
We obtain the phase diagram of the half-filled honeycomb Hubbard model with density matrix embedding theory, to address recent controversy at intermediate couplings. We use clusters from 2-12 sites and lattices at the thermodynamic limit. We identify a paramagnetic insulating state, with possible hexagonal cluster order, competitive with the antiferromagnetic phase at intermediate coupling. However, its stability is strongly cluster and lattice size dependent, explaining controversies in earlier work. Our results support the paramagnetic insulator as being a metastable, rather than a true, intermediate phase, in the thermodynamic limit.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据