Phase diagram of the three-dimensional Hubbard model at half filling

被引：100
|
作者：
Staudt, R
Dzierzawa, M
Muramatsu, A
机构：
[1] Univ Augsburg, Inst Phys, D-86135 Augsburg, Germany
[2] Univ Stuttgart, Inst Phys, D-70550 Stuttgart, Germany
来源：
EUROPEAN PHYSICAL JOURNAL B | 2000年 / 17卷 / 03期
关键词：
D O I：
10.1007/s100510070120
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We investigate the phase diagram of the three-dimensional Hubbard model at half filling using quantum Monte Carlo (QMC) simulations. The antiferromagnetic Neel temperature T-N is determined from the specific heat maximum in combination with finite-size scaling of the magnetic structure factor. Our results interpolate smoothly between the asymptotic solutions for weak and strong coupling, respectively, in contrast to previous QMC simulations. The location of the metal-insulator transition in the paramagnetic phase above T-N is determined using the electronic compressibility as criterion.
引用
收藏
页码：411 / 415
页数：5
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