کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1810193 1525234 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On-site and inter-site electron–phonon interaction in 2D Hubbard model
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
On-site and inter-site electron–phonon interaction in 2D Hubbard model
چکیده انگلیسی

An exact diagonalization study of Hubbard model having on-site electron–phonon interaction and inter-site phonon mediated interaction shows that on-site electron–phonon interaction generates an effective attraction between electrons which eventually forms on-site bipolaron. On the other hand, phonon mediated interaction between electrons at nearest-neighbor sites is suppressed by on-site Coulomb repulsion initially, but at certain larger strength this interaction strengthen the on-site electron–phonon interaction. There is also formation of neighboring-site bipolaron. Results show that interplay between electron–electron interaction and electron–phonon interaction is very much relevant.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 412, 1 March 2013, Pages 83–86
نویسندگان
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