کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1820299 1525783 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Impurity effect on optical response in MgB2
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Impurity effect on optical response in MgB2
چکیده انگلیسی

We report on the optical response in normal state of Mg(B1−xCx)2 using single crystals and an optical microscope combined with a FTIR spectrometer. The plasma frequency estimated from a sum rule of optical conductivity is consistent with the value of band calculation. Our results demonstrate that carbon-substitution has effects of strong scattering and electron doping. To understand the whole spectral profile, we need a two-Drude picture in which the σ-band scattering rate is much smaller than the π-band one. It has been revealed that with increasing carbon substitution the σ-band scattering rate rapidly increases, while the increase of π-band scattering rate is moderate.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity and its Applications - Volumes 445–448, 1 October 2006, Pages 50–53
نویسندگان
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