淡江大學機構典藏:Item 987654321/117388
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    题名: Nonresonant Inelastic X-Ray Scattering and Energy-Resolved Wannier Function Investigation of d-d Excitations in NiO and CoO
    作者: Larson, B. C.;Ku, Wei;Tischler, J. Z.;Lee, Chi-Cheng;Restrepo, O. D.;Eguiluz, A. G.;Zschack, P.;Finkelstein, K. D.
    日期: 2007-07-10
    上传时间: 2019-10-15 12:11:10 (UTC+8)
    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.
    關聯: Phys. Rev. Lett. 99(2), 026401
    DOI: 10.1103/PhysRevLett.99.026401
    显示于类别:[物理學系暨研究所] 期刊論文

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