Partial Ferromagnetism in the Hubbard Chain with Next-Nearest-Neighbor Hopping
Partial Ferromagnetism in the Hubbard Chain with Next-Nearest-Neighbor Hopping
复制标题
具有次近邻跳跃的哈伯德链中的部分铁磁性
DOI:
10.1143/jpsj.72.1191
复制
发表时间:
2003
影响因子:
1.7
通讯作者:
Y. Takahashi
中科院分区:
文献类型:
--
作者:
H. Nakano;Y. Takahashi
We study the one-dimensional Hubbard model with next-nearest-neighbor hopping by means of the numerical diagonalization for finite-size clusters. It is found that the ground state is evidently partially spin-polarized in a wide region of intermediate values of on-site Coulomb repulsion, which provides the first example as a minimal model without orbital degeneracy. Analysis of correlation functions makes it clear that the partially spin-polarized states form a spin polaron. Polaron's size grows with the increasing interaction.
影响因子:
3.7
作者:
S. Daul;R. Noack
通讯作者:
S. Daul;R. Noack
DOI:
--
发表时间:
2002
期刊:
Phys.Rev.B 65
影响因子:
--
作者:
H.Sakamoto;T.Momoi;K.Kubo
通讯作者:
K.Kubo