dd excitations in three-dimensional q-Space: A nonresonant inelastic X-ray scattering study on NiO
學年 100
學期 1
出版（發表）日期 2011-10-17
作品名稱 dd excitations in three-dimensional q-Space: A nonresonant inelastic X-ray scattering study on NiO
作品名稱（其他語言）
著者 N. Hiraoka,; M. Suzuki; K. D. Tsuei; H. Ishii; Y. Q. Cai; M. W. Haverkort; C. C. Lee; W. Ku
單位
出版者
著錄名稱、卷期、頁數 Europhysics Letters(EPL) 96(3), 37007
摘要 We have studied the dd excitations in NiO over three-dimensional momentum (q) space using nonresonant inelastic X-ray scattering. In addition to the previously reported peaks at 1.7 and 3.0 eV, another peak is found at 1.0 eV, with a dramatically different intensity distribution in momentum space.Contrary to the other two peaks that form oval structures maximizing at [111] directions, the 1.0 eV peak displays appreciable intensity along low-symmetry axes near [311] and [210], but vanishes in the three principal axes [100], [110], and [111], indicating a significant difference in the exciton wave function.We find good agreement between the experimental data and two state-of-the-art theories, advocating investigating other strongly correlated materials with similar experimental/theoretical approaches.
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語言 en
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期刊性質 國外
收錄於 SCI
產學合作
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審稿制度 是
國別 GBR
公開徵稿
出版型式 ,電子版
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/117383 )