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Spin-charge gauge approach to "pseudogap": theory versus experiments
Marchetti, PA; Orso, G; Su, ZB; Yu, L; Marchetti, PA , Univ Padua, Dept Phys, Via Marzolo 8, I-35131 Padua, Italy.
2004
发表期刊PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
ISSN0921-4534
卷号408期号:03页码:412-413
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.
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
关键词C-axis Resistivity Normal-state Cuprate Superconductors Insulator Crossover Single-crystals La2-xsrxcuo4 Magnetoresistance Fermions Fields Films
学科领域Physics
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收录类别SCI
WOS记录号WOS:000224051700173
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14032
专题1978-2010年知识产出
通讯作者Marchetti, PA , Univ Padua, Dept Phys, Via Marzolo 8, I-35131 Padua, Italy.
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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.
APA Marchetti, PA,Orso, G,Su, ZB,Yu, L,&Marchetti, PA , Univ Padua, Dept Phys, Via Marzolo 8, I-35131 Padua, Italy..(2004).Spin-charge gauge approach to "pseudogap": theory versus experiments.PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS,408(03),412-413.
MLA Marchetti, PA,et al."Spin-charge gauge approach to "pseudogap": theory versus experiments".PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 408.03(2004):412-413.
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