ITP OpenIR  > 理论物理所2011年知识产出
Two-Dimensional Mott-Hubbard Electrons in an Artificial Honeycomb Lattice
Singha, A; Gibertini, M; Karmakar, B; Yuan, S; Polini, M; Vignale, G; Katsnelson, MI; Pinczuk, A; Pfeiffer, LN; West, KW; Pellegrini, V; Pellegrini, V (reprint author), CNR, Ist Nanosci, I-56126 Pisa, Italy.
2011
发表期刊SCIENCE
ISSN0036-8075
卷号332期号:6034页码:1176-1179
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.
部门归属[Singha, A.; Gibertini, M.; Karmakar, B.; Polini, M.; Pellegrini, V.] CNR, Ist Nanosci, I-56126 Pisa, Italy; [Singha, A.; Gibertini, M.; Karmakar, B.; Polini, M.; Pellegrini, V.] Scuola Normale Super Pisa, I-56126 Pisa, Italy; [Yuan, S.; Katsnelson, M. I.] Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands; [Polini, M.; Vignale, G.] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China; [Vignale, G.] Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA; [Pinczuk, A.] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY USA; [Pinczuk, A.] Columbia Univ, Dept Phys, New York, NY USA; [Pfeiffer, L. N.; West, K. W.] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA
关键词Mean-field Theory Dirac Fermions Gas Graphene Physics
学科领域Physics
资助者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] ; 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] ; 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] ; 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]
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收录类别SCI
语种英语
资助者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] ; 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] ; 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] ; 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]
WOS记录号WOS:000291205200042
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14340
专题理论物理所2011年知识产出
通讯作者Pellegrini, V (reprint author), CNR, Ist Nanosci, I-56126 Pisa, Italy.
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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.
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