Ground state of a two-dimensional lattice system with a long-range interparticle repulsion: Stripe formation and effective lowering of dimension
Ground state of a two-dimensional lattice system with a long-range interparticle repulsion: Stripe formation and effective lowering of dimension
复制标题
具有长程粒子间斥力的二维晶格系统的基态：条纹形成和有效降维
DOI：
10.1103/physrevb.61.14184
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发表时间：
2000
影响因子：
3.7
通讯作者：
H. Kovtun
中科院分区：
文献类型：
--
作者：
A. Slutskin;V. Slavin;H. Kovtun
它已被证明，粒子有序成条纹和有效降低的尺寸普遍存在于二维晶格系统的基态与长程粒子间排斥的任何几何形状的主机晶格和任何物理上合理的各向同性对潜力。例子是层状或二维窄带导体中的吸附原子系统和自定域电荷载流子的集合。在此基础上，本文提出了一种全面描述上述体系基态空间结构及其填充因子与化学势的零温关系的一般分析方法。所获得的结果使我们能够表明，在铜氧化物超导体中显示的条纹的电荷排序可以完全由长程库仑空穴-空穴排斥引起。
It has been shown that particle ordering into stripes and effective lowering of dimension reside universally in the ground state of two-dimensional lattice systems with a long-range interparticle repulsion for any geometry of the host lattice and any physically reasonable isotropic pair potential. Examples are adatom systems and ensembles of self-localized charge carriers in layered or two-dimensional narrow-band conductors. On the basis of this fact a general analytical procedure has been formulated to describe fully the ground-state space structure of the above systems and the zero-temperature dependence of their filling factor on the chemical potential. The results obtained enable us to suggest that charge ordering into stripes revealed in copper-oxide superconductors can be caused solely by a long-range Coulomb hole-hole repulsion.