کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1812319 1025613 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
First-principles study on the lattice dynamics and thermodynamics properties of CaFe2As2
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
First-principles study on the lattice dynamics and thermodynamics properties of CaFe2As2
چکیده انگلیسی
The lattice dynamics of room temperature tetragonal phase of CaFe2As2 is studied by first-principles calculations based on the ab initio pseudopotential and plane wave basis. Phonon spectrum throughout the Brillouin zone is obtained using the density-functional perturbation theory within the linear response method. The frequencies of the Raman active modes, phonon density of states and lattice heat capacity are compared with the experimental measurements. The differences between our calculations and experimental measurements in the high-frequency region in phonon density of states are due to the interplay between phonons and spin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 405, Issue 19, 1 October 2010, Pages 4226-4230
نویسندگان
, , , , ,