ITP OpenIR  > 理论物理所科研产出  > SCI论文
Marchetti, PA; Ye, F; Su, ZB; Yu, L; Marchetti, PA (reprint author), Dipartimento Fis G Galilei, I-35131 Padua, Italy.
Non-BCS superconductivity for underdoped cuprates by spin-vortex attraction
Source PublicationJOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Language英语
KeywordT-j Model Fluctuations Crossover
AbstractWithin a gauge approach to the t-J model, we propose a new, non-BCS mechanism of superconductivity for underdoped cuprates. The gluing force of the superconducting mechanism is an attraction between spin vortices on two different Neel sublattices, centered around the empty sites described in terms of fermionic holons. The spin fluctuations are described by bosonic spinons with a gap generated by the spin vortices. Due to the no-double occupation constraint, there is a gauge attraction between holon and spinon binding them into a physical hole. Through gauge interaction the spin vortex attraction induces the formation of spin-singlet (RVB) spinon pairs with a lowering of the spinon gap. Lowering the temperature, the approach exhibits two crossover temperatures: at the higher crossover a finite density of incoherent holon pairs are formed leading to a reduction of the hole spectral weight, while at the lower crossover a finite density of incoherent spinon RVB pairs are also formed, giving rise to a gas of incoherent preformed hole pairs, and magnetic vortices appear in the plasma phase. Finally, at a even lower temperature the hole pairs become coherent, the magnetic vortices becoming dilute and superconductivity appears. The superconducting mechanism is not of BCS-type since it involves a gain in kinetic energy (for spinons) coming from the spin interactions. (C) 2010 Elsevier Ltd. All rights reserved.
2011
ISSN0022-3697
Volume72Issue:5Pages:337-340
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/14360
Collection理论物理所科研产出_SCI论文
Corresponding AuthorMarchetti, PA (reprint author), Dipartimento Fis G Galilei, I-35131 Padua, Italy.
Recommended Citation
GB/T 7714
Marchetti, PA,Ye, F,Su, ZB,et al. Non-BCS superconductivity for underdoped cuprates by spin-vortex attraction[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,2011,72(5):337-340.
APA Marchetti, PA,Ye, F,Su, ZB,Yu, L,&Marchetti, PA .(2011).Non-BCS superconductivity for underdoped cuprates by spin-vortex attraction.JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,72(5),337-340.
MLA Marchetti, PA,et al."Non-BCS superconductivity for underdoped cuprates by spin-vortex attraction".JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 72.5(2011):337-340.
Files in This Item:
File Name/Size DocType Version Access License
Non-BCS superconduct(193KB) 开放获取LicenseApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Marchetti, PA]'s Articles
[Ye, F]'s Articles
[Su, ZB]'s Articles
Baidu academic
Similar articles in Baidu academic
[Marchetti, PA]'s Articles
[Ye, F]'s Articles
[Su, ZB]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Marchetti, PA]'s Articles
[Ye, F]'s Articles
[Su, ZB]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.