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Theory of dual fermion superconductivity in hole-doped cuprates
Chang, J; Zhao, JZ; Chang, J (reprint author), Shaanxi Normal Univ, Coll Phys & Informat Technol, Xian 710119, Shaanxi, Peoples R China.; Chang, J (reprint author), Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China.
2017
发表期刊EUROPEAN PHYSICAL JOURNAL B
卷号90期号:8页码:154
文章类型Article
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.
学科领域Physics
资助者Shaanxi Normal University's seed funds ; Shaanxi Normal University's seed funds ; National Natural Science Foundation of China [11474029] ; National Natural Science Foundation of China [11474029] ; Shaanxi Normal University's seed funds ; Shaanxi Normal University's seed funds ; National Natural Science Foundation of China [11474029] ; National Natural Science Foundation of China [11474029]
DOIhttp://dx.doi.org/10.1140/epjb/e2017-80233-2
关键词[WOS]HIGH-TEMPERATURE SUPERCONDUCTORS ; HIGH-TC SUPERCONDUCTIVITY ; CU-O SYSTEM ; LIQUID BEHAVIOR ; COPPER OXIDES ; MAGNETIC EXCITATIONS ; PAIRING INTERACTION ; NEUTRON-SCATTERING ; SPIN EXCITATIONS ; PSEUDOGAP STATE
语种英语
资助者Shaanxi Normal University's seed funds ; Shaanxi Normal University's seed funds ; National Natural Science Foundation of China [11474029] ; National Natural Science Foundation of China [11474029] ; Shaanxi Normal University's seed funds ; Shaanxi Normal University's seed funds ; National Natural Science Foundation of China [11474029] ; National Natural Science Foundation of China [11474029]
WOS类目Physics, Condensed Matter
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/21993
专题理论物理所2017年知识产出
通讯作者Chang, J (reprint author), Shaanxi Normal Univ, Coll Phys & Informat Technol, Xian 710119, Shaanxi, Peoples R China.; Chang, J (reprint author), Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China.
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GB/T 7714
Chang, J,Zhao, JZ,Chang, J ,et al. Theory of dual fermion superconductivity in hole-doped cuprates[J]. EUROPEAN PHYSICAL JOURNAL B,2017,90(8):154.
APA Chang, J,Zhao, JZ,Chang, J ,&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.
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