کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1816221 1525260 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optical spectra of nickelates and charge-transfer transitions
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Optical spectra of nickelates and charge-transfer transitions
چکیده انگلیسی

Specific features of the charge-transfer (CT) states and O 2p→Ni3d CT transitions in the octahedral (NiO6)10-(NiO6)10- complex are considered in the cluster approach. The reduced matrix elements (RMEs) of the electric-dipole transition operator are calculated on many-electron wave functions of the complex corresponding to the initial and final states of a CT transition.Modelling the optical spectrum of nickelates has yielded a complicated CT band. The model spectrum is in satisfactory agreement with experimental data which demonstrates the limited validity of the generally accepted concept of a simple structure of CT spectra.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 392, Issues 1–2, 15 April 2007, Pages 29–33
نویسندگان
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