کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1867866 | 1038351 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spin fluctuation driven structural phase transitions in itinerant electron magnets: γâα transition in Ce-based compounds
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Spin fluctuation driven structural phase transitions in itinerant electron magnets: γâα transition in Ce-based compounds Spin fluctuation driven structural phase transitions in itinerant electron magnets: γâα transition in Ce-based compounds](/preview/png/1867866.png)
چکیده انگلیسی
We suggest a novel mechanism of structural transitions in itinerant electron magnets, driven by spin fluctuations strongly coupled to the crystal lattice. The mechanism explains the isostructural γâα transition in Ce-based compounds. The high-temperature γ-phase is shown to be stabilized by spin fluctuations dominating the bulk modulus. With the decrease of temperature and spin fluctuation amplitudes the bulk modulus becomes negative giving rise to a structural instability. The structural phase transition to the low-temperature α-phase is accompanied by the change of the volume described in terms of the order parameter defined by the volume strain.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 372, Issue 12, 17 March 2008, Pages 2086-2090
Journal: Physics Letters A - Volume 372, Issue 12, 17 March 2008, Pages 2086-2090
نویسندگان
A. Solontsov, A. Mirmelstein,