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Marchetti, PA; Orso, G; Su, ZB; Yu, L; Marchetti, PA , Univ Padua, Dept Phys, Via Marzolo 8, I-35131 Padua, Italy.
Spin-charge gauge approach to "pseudogap": theory versus experiments
Source PublicationPHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
KeywordC-axis Resistivity Normal-state Cuprate Superconductors Insulator Crossover Single-crystals La2-xsrxcuo4 Magnetoresistance Fermions Fields Films
AbstractWe 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.
2004
ISSN0921-4534
Volume408Issue:03Pages:412-413
Subject AreaPhysics
Indexed BySCI
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/14032
Collection理论物理所科研产出_SCI论文
Corresponding AuthorMarchetti, PA , Univ Padua, Dept Phys, Via Marzolo 8, I-35131 Padua, Italy.
Recommended Citation
GB/T 7714
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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