Superconductivity from pseudogap through attraction between spin-vortices

doi:10.1016/j.physc.2009.11.136

	Superconductivity from pseudogap through attraction between spin-vortices
	Marchetti, PA ; Ye, F ; Su, ZB ; Yu, L
	2010
会议日期	SEP 07-12, 2009
会议地点	Tokyo, JAPAN
卷号	470
DOI	10.1016/j.physc.2009.11.136
页码	S968-S969
英文摘要	Within the framework of the spin-charge gauge approach to the 2D t-J model (Marchetti et al., 2007 [1]) we propose a new non-BCS mechanism for superconductivity in hole-underdoped cuprates. The gluing force is an attraction between spin-vortices centered at the empty sites (described by fermionic holons) in two different Neel sublattices. This attraction induces in turn, through a gauge interaction originated from the no-double occupation constraint, formation of resonance valent bond (RVB) spin pairs (described in terms of bosonic spinons). When holon pairs condense, a finite density of RVB spinon pairs appears. Superconductivity occurs at T = 0 at finite doping concentration, when both the holon-vortex pairs and the RVB spinon pairs are condensed. Its precursor is a normal state region where magnetic vortices proliferate, leading to superconductivity via a 3D-gauged-XY transition. (C) 2009 Elsevier B.V. All rights reserved.
会议录	PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
会议录出版者	ELSEVIER SCIENCE BV
会议录出版地	AMSTERDAM
语种	英语
URL标识	查看原文
ISSN号	0921-4534
WOS研究方向	Physics
内容类型	会议论文
源URL	[http://ir.itp.ac.cn/handle/311006/23628]
专题	SCI会议论文
作者单位	1.[Yu, L.] CAS, Inst Phys, Beijing 100190, Peoples R China 2.[Marchetti, P. A.] Ist Nazl Fis Nucl, Dipartimento Fis, I-35131 Padua, Italy 3.[Ye, F.] Tsinghua Univ, Inst Adv Study, Beijing 100084, Peoples R China 4.[Su, Z. B. 5.Yu, L.] CAS, Inst Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Marchetti, PA,Ye, F,Su, ZB,et al. Superconductivity from pseudogap through attraction between spin-vortices[C]. 见:. Tokyo, JAPAN. SEP 07-12, 2009.