Enhancement of third harmonic emission by interaction of two colored filament with droplet in air
文献类型：期刊论文
| 作者 | Xi, TT ; Lu, X ; Zhang, J |
| 刊名 | OPTICS COMMUNICATIONS
 |
| 出版日期 | 2009 |
| 卷号 | 282期号:15页码:3140 |
| 关键词 | LIGHT FILAMENTS 3RD-HARMONIC PULSE FEMTOSECOND PULSES LASER-PULSES GENERATION CONVERSION RADIATION |
| ISSN号 | 0030-4018 |
| 通讯作者 | Zhang, J: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | Antiferromagnetism is relevant to high-temperature (high-T-c) superconductivity because copper oxide and iron arsenide superconductors arise from electron- or hole-doping of their antiferromagnetic parent compounds(1-6). There are two broad classes of explanation for antiferromagnetism: in the 'local moment' picture, appropriate for the insulating copper oxides(1), antiferromagnetic interactions are well described by a Heisenberg Hamiltonian(7,8); whereas in the 'itinerant model', suitable for metallic chromium, antiferromagnetic order arises from quasiparticle excitations of a nested Fermi surface(9,10). There has been contradictory evidence regarding the microscopic origin of the antiferromagnetic order in iron arsenide materials(5,6), with some favouring a localized picture(11-15) and others supporting an itinerant point of view(16-20). More importantly, there has not even been agreement about the simplest effective ground-state Hamiltonian necessary to describe the antiferromagnetic order(21-25). Here, we use inelastic neutron scattering to map spin-wave excitations in CaFe2As2 (refs 26, 27), a parent compound of the iron arsenide family of superconductors. We find that the spin waves in the entire Brillouin zone can be described by an effective three-dimensional local-moment Heisenberg Hamiltonian, but the large in-plane anisotropy cannot. Therefore, magnetism in the parent compounds of iron arsenide superconductors is neither purely local nor purely itinerant, rather it is a complicated mix of the two. |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [10734130, 10634020, 60621063]; National Basic Research Programme of China [20070815101]; National Hi-tech ICF Programme and the President Fund of GUCAS. |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/37452]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Xi, TT,Lu, X,Zhang, J. Enhancement of third harmonic emission by interaction of two colored filament with droplet in air[J]. OPTICS COMMUNICATIONS,2009,282(15):3140. |
| APA | Xi, TT,Lu, X,&Zhang, J.(2009).Enhancement of third harmonic emission by interaction of two colored filament with droplet in air.OPTICS COMMUNICATIONS,282(15),3140. |
| MLA | Xi, TT,et al."Enhancement of third harmonic emission by interaction of two colored filament with droplet in air".OPTICS COMMUNICATIONS 282.15(2009):3140. |
入库方式： OAI收割
来源：物理研究所
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