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题名: Spin-charge gauge approach to "pseudogap": theory versus experiments
作者: Marchetti, PA ;  Orso, G ;  Su, ZB ;  Yu, L
刊名: PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
出版日期: 2004
卷号: 408, 期号:03, 页码:412-413
关键词: C-AXIS RESISTIVITY ;  NORMAL-STATE ;  CUPRATE SUPERCONDUCTORS ;  INSULATOR CROSSOVER ;  SINGLE-CRYSTALS ;  LA2-XSRXCUO4 ;  MAGNETORESISTANCE ;  FERMIONS ;  FIELDS ;  FILMS
学科分类: Physics
通讯作者: Marchetti, PA , Univ Padua, Dept Phys, Via Marzolo 8, I-35131 Padua, Italy.
部门归属: Univ Padua, Dept Phys, I-35131 Padua, Italy; Univ Padua, Ist Nazl Fis Nucl, I-35131 Padua, Italy; SISSA, Sch Adv Int Studies, I-34014 Trieste, Italy; INFM, I-34014 Trieste, Italy; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: We propose an explanation of several experimental features related to the "pseudogap" in high T-c cuprates in terms of a spin-charge gauge theory. In this approach, based on a formal spin-charge separation applied to the t-J model, the low energy effective action describes gapful spinons (with a theoretically derived doping dependence of the gap m(s) similar to J(delta\ ln delta\)(1/2), where delta is the doping concentration) and holons with "small" Fermi surface (epsilon(F) similar to tdelta) interacting via a gauge field. The main effect of gauge fluctuations is to introduce a dissipation similar to T/chi where chi is the diamagnetic susceptibility. The competition between the two energy scales, in, and T/chi is the root in our approach of many phenomena peculiar to transport properties of the "pseudogap phase". A good agreement is found between the experimental data and theoretically derived doping and temperature dependence of many physical quantities, such as in-plane and out-of-plane resistivity, in-plane magnetoresistance, far infrared electronic AC conductivity and spin lattice relaxation rate. (C) 2004 Elsevier B.V. All rights reserved.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000224051700173
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14032
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Marchetti, PA,Orso, G,Su, ZB,et al. Spin-charge gauge approach to "pseudogap": theory versus experiments[J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,2004,408(03):412-413.
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