Quasiparticles as composite objects in the resonating valence bond superconductor

被引：18

作者：

Zhou, Y ^{[1
]}

Muthukumar, VN

Weng, ZY

机构：

[1] Tsinghua Univ, Ctr Adv Study, Beijing 100084, Peoples R China

[2] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

来源：

PHYSICAL REVIEW B | 2003年 / 67卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.67.064512

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the nature of the superconducting state, the origin of d-wave pairing, and elementary excitations of a resonating valence bond (RVB) superconductor. We show that the phase string formulation of the t-J model leads to confinement of bare spinon and holon excitations in the superconducting state, though the vacuum is described by the RVB state. Nodal quasiparticles are obtained as composite excitations of spinon and holon excitations. The d-wave pairing symmetry is shown to arise from short-range antiferromagnetic correlations.

引用

页数：9

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