Angle-resolved photoemission study on Fermi surface of quantum well structures based on strongly correlated oxides

基于强关联氧化物的量子阱结构费米面角分辨光电子发射研究

• 批准号: 19684010
• 负责人: KUMIGASHIRA Hiroshi
• 金额: $ 12.98万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (A)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19684010/
• 关键词: 光電子分光; 強相関エレクトロニクス; 表面・界面物性; 強相関電子系; 量子井戸; 酸化物超構造; 酸化物ヘテロ構造; 酸化物薄膜; 角度分解光電子分光

The quantum confinement of strongly correlated electrons in artificial structures provides a platform for studying the behavior of correlated Fermi-liquid states in reduced dimensions. The successful creation and control of metallic quantum well states in artificial structures of a strongly correlated oxide reveals the unique behavior of two-dimensional electron liquid states, characterized by the orbital-selective quantization originating from the anisotropic orbital character of the V 3d states and unusual band renormalization of the subbands near the Fermi level, that reflect complex interactions in the quantum well.

人工结构中强关联电子的量子限制为研究降维关联费米液体态的行为提供了一个平台。在强关联氧化物的人工结构中成功地创建和控制金属量子阱态揭示了二维电子液体态的独特行为，其特征在于源自V 3d态的各向异性轨道特性的轨道选择性量子化和费米能级附近的子带的不寻常的带重整化，反映了量子阱中的复杂相互作用。

项目成果

Interfacial electronic structure of SrTiO_3/SrRuO_3 heterojuctions studied by in situ photoemissionspectroscopy

原位光电子能谱研究SrTiO_3/SrRuO_3异质结的界面电子结构

• 发表时间: 2008
• 期刊: Appl.Phys.Lett. 92
• 作者: H. Kumigashira;M. Minohara;M. Takizawa;A. Fujimori;D. Toyota;I. Ohkubo;M. Oshima;M. Lippmaa;M. Kawasaki
• 通讯作者: M. Kawasaki

Temperature-dependent photoemission and x-ray absorption studies of the metal-insulator transition in Bi1-xLaxNiO3

• DOI: 10.1103/physrevb.76.205123
• 发表时间: 2007-11-01
• 期刊: PHYSICAL REVIEW B
• 影响因子: 3.7
• 作者: Wadati, Hiroki;Tanaka, Kiyohisa;Oshima, Masaharu
• 通讯作者: Oshima, Masaharu

Gradual disappearance of the Fermi surface near the metal-insulator transition in La 1 − x Sr x Mn O 3 thin films

• DOI: 10.1103/physrevb.76.201103
• 发表时间: 2007-05
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: A. Chikamatsu;H. Wadati;H. Kumigashira;M. Oshima;A. Fujimori;M. Lippmaa;K. Ono;M. Kawasaki;H. Koinuma

Band diagrams of spin tunneling junctions La0.6Sr0.4MnO3/Nb:SrTiO3 and SrRuO3/Nb:SrTiO3 determined by in situ photoemission spectroscopy

• DOI: 10.1063/1.2717517
• 发表时间: 2007-03-26
• 期刊: APPLIED PHYSICS LETTERS
• 影响因子: 4
• 作者: Minohara, M.;Ohkubo, I.;Oshima, M.
• 通讯作者: Oshima, M.

Thickness dependent electronic structure of La0.6Sr0.4MnO3 layer in SrTiO3/La0.6Sr0.4MnO3/SrTiO3 heterostructures studied by hard x-ray photoemission spectroscopy

• DOI: 10.1063/1.3081016
• 发表时间: 2009-02
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: K. Yoshimatsu;K. Horiba;H. Kumigashira;E. Ikenaga;M. Oshima