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Two-Dimensional Mott-Hubbard Electrons in an Artificial Honeycomb Lattice
文献类型：期刊论文
| 作者 | Singha, A ; Gibertini, M ; Karmakar, B ; Yuan, S ; Polini, M ; Vignale, G ; Katsnelson, MI ; Pinczuk, A ; Pfeiffer, LN ; West, KW ; Pellegrini, V |
| 刊名 | SCIENCE
 |
| 出版日期 | 2011 |
| 卷号 | 332期号:6034页码:1176-1179 |
| 关键词 | MEAN-FIELD THEORY DIRAC FERMIONS GAS GRAPHENE PHYSICS |
| ISSN号 | 0036-8075 |
| 通讯作者 | Pellegrini, V (reprint author), CNR, Ist Nanosci, I-56126 Pisa, Italy. |
| 英文摘要 | Artificial crystal lattices can be used to tune repulsive Coulomb interactions between electrons. We trapped electrons, confined as a two-dimensional gas in a gallium arsenide quantum well, in a nanofabricated lattice with honeycomb geometry. We probed the excitation spectrum in a magnetic field, identifying collective modes that emerged from the Coulomb interaction in the artificial lattice, as predicted by the Mott-Hubbard model. These observations allow us to determine the Hubbard gap and suggest the existence of a Coulomb-driven ground state. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 资助信息 | Chinese Academy of Sciences [KJCX2.YW.W10]; FOM (Foundation for Fundamental Research on Matter), the Netherlands; NSF [DMR-0803691, CHE-0641523, DMR-0705460]; Italian Ministry of research; Gordon and Betty Moore Foundation; NSF Materials Research Science and Engineering Centers through the Princeton Center for Complex Materials [DMR-0819860] |
| 原文出处 | http://dx.doi.org/10.1126/science.1204333 |
| 语种 | 英语 |
| WOS记录号 | WOS:000291205200042 |
| 公开日期 | 2013-05-17 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/14340]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 推荐引用方式 GB/T 7714 | Singha, A,Gibertini, M,Karmakar, B,et al. Two-Dimensional Mott-Hubbard Electrons in an Artificial Honeycomb Lattice[J]. SCIENCE,2011,332(6034):1176-1179. |
| APA | Singha, A.,Gibertini, M.,Karmakar, B.,Yuan, S.,Polini, M.,...&Pellegrini, V.(2011).Two-Dimensional Mott-Hubbard Electrons in an Artificial Honeycomb Lattice.SCIENCE,332(6034),1176-1179. |
| MLA | Singha, A,et al."Two-Dimensional Mott-Hubbard Electrons in an Artificial Honeycomb Lattice".SCIENCE 332.6034(2011):1176-1179. |
入库方式： OAI收割
来源：理论物理研究所
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