کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1519183 1511639 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Refining Fermi surface topologies from ab initio calculations through momentum density spectroscopies
ترجمه فارسی عنوان
پردازش توپولوژی سطوح فرمی از محاسبات اولیه از طریق طیف سنجی تراکم حرکتی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی

It is well known that the agreement between the Fermi surface topologies predicted by ab initio electronic structure calculations and experiment can often be brought into much better agreement through small rigid-band-like shifts. A new method for refining these calculations using experimental data containing Fermi surface information, based on a rigid-band-like fitting approach is presented. In this method, experimental data from different methods can be combined to refine and deliver a ‘tuned’ bandstructure, allowing an investigation of FS nesting properties, a quantitative comparison between experiment and calculation, and highlighting the origin of inconsistencies. Results of the application of this method to positron annihilation experiments in vanadium are presented, showing significant improvement over the ab initio calculation. In order to demonstrate the versatility of this fitting method, it has been applied to a combination of positron annihilation measurements and magnetic Compton scattering experiments in ferromagnetic nickel.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Physics and Chemistry of Solids - Volume 65, Issue 12, December 2004, Pages 2011–2016
نویسندگان
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