THEORY OF QUASI-ONE-DIMENSIONAL ELECTRON-GAS WITH STRONG ON-SITE INTERACTIONS
THEORY OF QUASI-ONE-DIMENSIONAL ELECTRON-GAS WITH STRONG ON-SITE INTERACTIONS
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DOI：
10.1103/physrevb.14.2989
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发表时间：
1976-01-01
影响因子：
3.7
通讯作者：
EMERY, VJ
中科院分区：
文献类型：
--
作者：
EMERY, VJ
它表明，准一维系统与强吸引力或排斥力之间的耦合在同一网站上的电子是等价的硬核心和长程相互作用的玻色气体和海森堡-伊辛磁铁。包括链间和链内的跳跃和耦合，并由初等简并微扰理论导出其等价关系。电子相关函数是从已知的赝磁性的，并用于讨论的情况下，超导性，电荷或自旋密度波跃迁发生在耦合链。
It is shown that a quasi-one-dimensional system with strong attractive or repulsive coupling between electrons on the same site is equivalent to a Bose gas with hard core and longer-range interactions and to a Heisenberg-Ising magnet. Interchain and intrachain hopping and coupling are included and the equivalences are derived by elementary degenerate perturbation theory. Electronic correlation functions are derived from known pseudomagnetic ones and are used to discuss the circumstances in which superconductivity, charge-or spin-density wave transitions occur in the coupled chains.