کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1813594 | 1525246 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evidence for charge order in organic superconductors obtained by vibrational spectroscopy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Evidence for charge order in organic superconductors obtained by vibrational spectroscopy Evidence for charge order in organic superconductors obtained by vibrational spectroscopy](/preview/png/1813594.png)
چکیده انگلیسی
We study charge disproportionation in few quasi-two-dimensional BEDT-TTF-based compounds by following the temperature dependence of a charge-sensitive vibration ν27(B1u) of BEDT-TTF molecule. While in a charge ordered insulator θ-(BEDT-TTF)2RbZn(SCN)4 a difference between charge on the lattice sites is as high as 0.6e, a small charge disproportionation of 0.15-0.2e is found in two metallic compounds that become superconducting at low temperatures βâ³-(BEDT-TTF)2SF5CH2CF2SO3 and β-(EDT-TTF)4[Hg3I8](1-x). In contrast to these, a pure metallic βâ³-(BEDT-TTF)2SO3CHFSF5 does not show any presence of charge disproportionation. This study suggests a correlation between a slight charge disproportionation in the metallic state and superconductivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 404, Issues 3â4, 1 March 2009, Pages 490-493
Journal: Physica B: Condensed Matter - Volume 404, Issues 3â4, 1 March 2009, Pages 490-493
نویسندگان
Natalia Drichko, Stefan Kaiser, Yaxiu Sun, Conrad Clauss, Martin Dressel, Hatsumi Mori, John Schlueter, Elena I. Zhyliaeva, Svetlana A. Torunova, Rimma N. Lyubovskaya,