论文标题
二维Hubbard模型中的铁磁对角线条纹状态，$ u \ u \ lyssim \ indsim \ infty $
Ferromagnetic diagonal stripe states in the two-dimensional Hubbard model with $U\lesssim\infty$
论文作者
论文摘要
我们进行了一个变异的蒙特卡洛模拟，以研究强耦合区域的正方形晶格上的二维Hubbard模型的基态。当孔密度$ε= 1/8 $和下一个最近的邻居跳跃$ t'/t = -0.30 $时，计算可能的不均匀电子状态的能量增益是$ u $的函数。以键为中心的铁磁对角条纹状态在强耦合区域（$ u/t \ geq $ 16）稳定，这是由于动能和现场库仑相互作用的增加，这是由于Holon在Ferromagnetic域上移动的Holon造成的，以及Kinetic-ExexChange-ExexChange-Exexchange-Interaction interaction Anteraction Antiferreg ant Fiffiferreg的增益。
We have performed a variational Monte Carlo simulation to study the ground state of a two-dimensional Hubbard model on a square lattice in the strong coupling region. The energy gain of possible inhomogeneous electron states are computed as a function of $U$ when the hole density $ε=1/8$ and next nearest-neighbor hopping $t'/t=-0.30$. The bond-centered ferromagnetic diagonal stripe state is stabilized in the strong coupling region ($U/t\geq$16), which is due to the gain of both kinetic energy and on-site Coulomb interaction energy due to the holon moving over the ferromagnetic domain and the gain of kinetic-exchange-interaction energy at the antiferromagnetic domain wall.
