Spin-charge gauge approach to "pseudogap": theory versus experiments
文献类型：期刊论文
| 作者 | Marchetti, PA; Orso, G; Su, ZB ; Yu, L; Marchetti, PA , Univ Padua, Dept Phys, Via Marzolo 8, I-35131 Padua, Italy.
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| 刊名 | PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
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| 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 |
| ISSN号 | 0921-4534 |
| 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. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000224051700173 |
| 公开日期 | 2012-08-30 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/14032]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Marchetti, PA , Univ Padua, Dept Phys, Via Marzolo 8, I-35131 Padua, Italy. |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：理论物理研究所
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