Ferromagnetic pairing states on two-coupled chains

Ferromagnetic pairing states on two-coupled chains
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两条耦合链上的铁磁配对状态

DOI:
10.1088/1751-8113/41/36/365208
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发表时间:
2008
期刊:
Journal of Physics A: Mathematical and Theoretical
影响因子:
--
通讯作者:
A. Tanaka
A. Tanaka
中科院分区:
--
文献类型:
--
作者:
A. Tanaka

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我们提出了一个具体的模型,同时表现出铁磁性和电子对凝聚。该模型定义在两个链上,由电子跳跃项,现场库仑排斥和描述两个电子之间的铁磁耦合的铁磁相互作用,一个在链中的一个键上,另一个在另一个链中的一个站点上。严格证明了该模型具有全极化铁磁配对基态。还提出了模型的高维版本。
We propose a concrete model which exhibits ferromagnetism and electron-pair condensation simultaneously. The model is defined on two chains and consists of the electron hopping term, the on-site Coulomb repulsion and a ferromagnetic interaction which describes ferromagnetic coupling between two electrons, one on a bond in a chain and the other on a site in the other chain. It is rigorously shown that the model has fully-polarized ferromagnetic pairing ground states. The higher dimensional version of the model is also presented.
DOI: --
发表时间: 2007
期刊: Journal of Physics A:Mathematical and Theoretical 40
影响因子: --
作者:
北野 正雄;中西 俊博;中西 俊博;H. Kobayashi;小林 弘和;Akinori Tanaka
通讯作者: Akinori Tanaka