Metal-insulator crossover in high T-c cuprates: A gauge field approach
文献类型：期刊论文
| 作者 | Marchetti, PA; Su, ZB ; Yu, L; Marchetti, PA , Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy.
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| 刊名 | PRAMANA-JOURNAL OF PHYSICS
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| 出版日期 | 2002 |
| 卷号 | 58期号:41035页码:803-808 |
| 关键词 | Temperature Normal-state Single-crystals La2-xsrxcuo4 Resistivity Magnetoresistance Superconductors Bosonization Transport Fermions Inplane |
| ISSN号 | 0304-4289 |
| 英文摘要 | A metal-insulator crossover appears in the experimental data for in-plane resistivity of underdoped cuprates and a range of superconducting cuprates in the presence of a strong magnetic field suppressing superconductivity. We propose an explanation for this phenomenon based on a gauge field theory approach to the t-J model. In this approach, based on a formal spin-charge separation, the low energy effective action describes gapful spinons (with a theoretically derived doping dependence of the gap m(s)(2) similar to delta\In delta\) and holons with finite Fermi surface (epsilon(F) similar to tdelta) interacting via a gauge field whose basic effect on the spinons is to bind them into overdamped spin waves, shifting their gap by a damping term linear in T, which causes the metal-insulator crossover. The presence of a magnetic field perpendicular to the plane acts by increasing the damping, in turn producing a big positive transverse in-plane magnetoresistance at low T, as experimentally observed. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000176937700016 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13527]  |
| 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, Dipartimento Fis G Galilei, I-35131 Padua, Italy. |
| 推荐引用方式 GB/T 7714 | Marchetti, PA,Su, ZB,Yu, L,et al. Metal-insulator crossover in high T-c cuprates: A gauge field approach[J]. PRAMANA-JOURNAL OF PHYSICS,2002,58(41035):803-808. |
| APA | Marchetti, PA,Su, ZB,Yu, L,&Marchetti, PA , Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy..(2002).Metal-insulator crossover in high T-c cuprates: A gauge field approach.PRAMANA-JOURNAL OF PHYSICS,58(41035),803-808. |
| MLA | Marchetti, PA,et al."Metal-insulator crossover in high T-c cuprates: A gauge field approach".PRAMANA-JOURNAL OF PHYSICS 58.41035(2002):803-808. |
入库方式： OAI收割
来源：理论物理研究所
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