Nonresonant Inelastic X-Ray Scattering and Energy-Resolved Wannier Function Investigation of d-d Excitations in NiO and CoO
學年 95
學期 2
出版（發表）日期 2007-07-10
作品名稱 Nonresonant Inelastic X-Ray Scattering and Energy-Resolved Wannier Function Investigation of d-d Excitations in NiO and CoO
作品名稱（其他語言）
著者 B. C. Larson; Wei Ku; J. Z. Tischler; Chi-Cheng Lee; O. D. Restrepo; A. G. Eguiluz; P. Zschack; K. D. Finkelstein
單位
出版者
著錄名稱、卷期、頁數 Phys. Rev. Lett. 99(2), 026401
摘要 Nonresonant inelastic x-ray scattering measurements on NiO and CoO show that strong dipole-forbidden d−d excitations appear within the Mott gap at large wave vectors. These dominant excitations are highly anisotropic, and have [001] nodal directions for NiO. Theoretical analyses based on a novel, energy-resolved Wannier function (within the local density approximation+HubbardU) show that the anisotropy reflects the local exciton wave functions and local point-group symmetry. The sensitivity to weak symmetry breaking in particle-hole wave functions suggests a wide application to strongly correlated systems.
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語言 en_US
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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 USA
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/987654321/117388 )