Theory of dual fermion superconductivity in hole-doped cuprates
文献类型：期刊论文
| 作者 | Chang, J (reprint author), Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China.; Chang, J; Zhao, JZ; Chang, J (reprint author), Shaanxi Normal Univ, Coll Phys & Informat Technol, Xian 710119, Shaanxi, Peoples R China. |
| 刊名 | EUROPEAN PHYSICAL JOURNAL B
 |
| 出版日期 | 2017 |
| 卷号 | 90期号:8页码:154 |
| DOI | http://dx.doi.org/10.1140/epjb/e2017-80233-2 |
| 英文摘要 | Since the discovery of the cuprate high-temperature superconductivity in 1986, a universal phase diagram has been constructed experimentally and numerous theoretical models have been proposed. However, there remains no consensus on the underlying physics thus far. Here, we theoretically investigate the phase diagram of hole-doped cuprates based on an itinerant-localized dual fermion model, with the charge carriers doped on the oxygen sites and localized holes on the copper d(x2-y2) orbitals. We analytically demonstrate that the puzzling anomalous normal state or the strange metal could simply stem from a free Fermi gas of carriers bathing in copper antiferromagnetic spin fluctuations. The short-range high-energy spin excitations also act as the "magnetic glue" of carrier Cooper pairs and induce d-wave superconductivity from the underdoped to overdoped regime, distinctly different from the conventional low-frequency magnetic fluctuation mechanism. We further sketch out the characteristic dome-shaped critical temperature T-c versus doping level. The emergence of the pseudogap is ascribed to the localization of partial carriers coupled to the local copper moments or a crossover from the strange metal to a nodal Kondo-like insulator. Our work provides a consistent theoretical framework to understand the typical phase diagram of hole-doped cuprates and paves a distinct way to the studies of both non-Fermi liquid and unconventional superconductivity in strongly correlated systems. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/21993]  |
| 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 | Chang, J (reprint author), Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China.; Chang, J (reprint author), Shaanxi Normal Univ, Coll Phys & Informat Technol, Xian 710119, Shaanxi, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Chang, J ,Chang, J,Zhao, JZ,et al. Theory of dual fermion superconductivity in hole-doped cuprates[J]. EUROPEAN PHYSICAL JOURNAL B,2017,90(8):154. |
| APA | Chang, J ,Chang, J,Zhao, JZ,&Chang, J .(2017).Theory of dual fermion superconductivity in hole-doped cuprates.EUROPEAN PHYSICAL JOURNAL B,90(8),154. |
| MLA | Chang, J ,et al."Theory of dual fermion superconductivity in hole-doped cuprates".EUROPEAN PHYSICAL JOURNAL B 90.8(2017):154. |
入库方式： OAI收割
来源：理论物理研究所
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