两个表现出d_{x²-y²}配对的Hubbard模型中的配对机制
凝聚态物理
2007-05-23 v1
摘要
这里我们考察了两个模型(二维和两腿梯子Hubbard模型)配对机制的各个方面。这两个模型都表现出具有d_{x²-y²}对称性的配对关联。然而,这两个系统的未掺杂绝缘态是不同的,二维晶格的特征是基态具有长程反铁磁序,而两腿梯子的基态具有自旋隙。我们的目标是更好地理解在这两个模型中导致d_{x²-y²}配对的基本配对机制。
引用
@article{arxiv.cond-mat/9606218,
title = {Pairing Mechanism in Two Hubbard Models that Show d_{x^2-y^2} Pairing},
author = {D. J. Scalapino},
journal= {arXiv preprint arXiv:cond-mat/9606218},
year = {2007}
}
备注
Latex, uses lprocldpf and epsf, 16 pages and 19 figures, to be published in the proceedings of the BICAS Summer School on "Symmetry of the Order Parameter in High-Temperature Superconductors" held in Ankara on June 17-22, 1996