کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1595597 | 1002783 | 2007 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effective electron-electron interactions and magnetic phase transition in a two-dimensional electron liquid
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We investigate the spin-dependent effective electron-electron interactions in a uniform system of two-dimensional electrons to understand the spontaneous magnetization expected to occur at very low density. For this purpose, we adopt the Kukkonen-Overhauser form for the effective interactions which are built by accurately determined local-field factors describing the charge and spin fluctuations. The critical behavior of the effective interaction for parallel spin electrons allows us to quantitatively locate the transition to the ferromagnetic state at rsâ27. When the finite width effects are approximately taken into account the transition occurs at rsâ30 in agreement with recent quantum Monte Carlo calculations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 141, Issue 11, March 2007, Pages 595-599
Journal: Solid State Communications - Volume 141, Issue 11, March 2007, Pages 595-599
نویسندگان
R. Asgari, A. Esmailian, B. Tanatar,