Theory of Gossamer and resonating valence bond superconductivity
文献类型：期刊论文
| 作者 | Gan, JY; Zhang, FC; Su, ZB ; Gan, JY , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
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| 刊名 | PHYSICAL REVIEW B
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| 出版日期 | 2005 |
| 卷号 | 71期号:1页码:- |
| 关键词 | T-j Model Variational Monte-carlo High-temperature Superconductors D-wave Superconductivity Hubbard-model Cuprate Superconductors Organic Superconductors Gap Anisotropy Mean-field Symmetry |
| ISSN号 | 1098-0121 |
| 英文摘要 | We use an effective Hamiltonian for two-dimensional Hubbard model including an antiferromagnetic spin-spin coupling term to study recently proposed Gossamer superconductivity. We apply a renormalized mean field theory to approximately take into account the strong correlation effect in partially projected Gutzwiller wave functions. At the half-filling, there is a first order phase transition to separate a Mott insulator at large Coulomb repulsion U from a Gossamer superconductor at small U. At the critical value U=U-c, the charge carrier density and the superconducting (SC) order parameter change discontinuously from zero in the Mott insulating phase to finite values in the Gossamer SC phase. The first order transition is due to the interplay of the kinetic and spin exchange energies. As the electron density changes away from half-filling, the Gossamer SC state changes smoothly, while the Mott insulator is evolved into a resonating valence bond (RVB) SC state. The Gossamer and RVB SC states have the same pairing symmetry. The SC order parameter changes smoothly from a RVB SC state at U>U-c to a Gossamer SC state at U |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000226735100134 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13915]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Gan, JY , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Gan, JY,Zhang, FC,Su, ZB,et al. Theory of Gossamer and resonating valence bond superconductivity[J]. PHYSICAL REVIEW B,2005,71(1):-. |
| APA | Gan, JY,Zhang, FC,Su, ZB,&Gan, JY , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China..(2005).Theory of Gossamer and resonating valence bond superconductivity.PHYSICAL REVIEW B,71(1),-. |
| MLA | Gan, JY,et al."Theory of Gossamer and resonating valence bond superconductivity".PHYSICAL REVIEW B 71.1(2005):-. |
入库方式： OAI收割
来源：理论物理研究所
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