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Marchetti, PA; Ye, F; Su, ZB; Yu, L; Marchetti, PA (reprint author), Ist Nazl Fis Nucl, Dipartimento Fis G Galilei, I-35131 Padua, Italy.
A non-BCS mechanism for superconductivity in underdoped cuprates via attraction between spin vortices
Source PublicationEPL
Language英语
KeywordT-j Model High-temperature Superconductivity Valence Bond State Antiferromagnet La2cuo4 Physics Plasma Phase Holes
AbstractWe propose a non-BCS mechanism for superconductivity in hole-underdoped cuprates based on a gauge approach to the t-J model. The gluing force is an attraction between spin vortices centered on the empty sites of two opposite Neel sublattices, leading to pairing of charge carriers. In the presence of these pairs, a gauge force coming from the single occupancy constraint induces, in turn, the pairing of the spin carriers. The combination of the charge and spin pairs gives rise to a finite density of incoherent hole pairs, leading to a finite Nernst signal as precursor to superconductivity. The true superconducting transition occurs at an even lower temperature, via a 3D XY-type transition. The main features of this non-BCS description of superconductivity are consistent with the experimental results in underdoped cuprates, especially the contour plot of the Nernst signal. Copyright (c) EPLA, 2011
2011
ISSN0295-5075
Volume93Issue:5Pages:57008
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/14399
Collection理论物理所科研产出_SCI论文
Corresponding AuthorMarchetti, PA (reprint author), Ist Nazl Fis Nucl, Dipartimento Fis G Galilei, I-35131 Padua, Italy.
Recommended Citation
GB/T 7714
Marchetti, PA,Ye, F,Su, ZB,et al. A non-BCS mechanism for superconductivity in underdoped cuprates via attraction between spin vortices[J]. EPL,2011,93(5):57008.
APA Marchetti, PA,Ye, F,Su, ZB,Yu, L,&Marchetti, PA .(2011).A non-BCS mechanism for superconductivity in underdoped cuprates via attraction between spin vortices.EPL,93(5),57008.
MLA Marchetti, PA,et al."A non-BCS mechanism for superconductivity in underdoped cuprates via attraction between spin vortices".EPL 93.5(2011):57008.
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