کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1862771 1645441 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Single-particle spectrum for a model of fermions interacting with two-level local excitations on a lattice: A dynamical CPA approach
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Single-particle spectrum for a model of fermions interacting with two-level local excitations on a lattice: A dynamical CPA approach
چکیده انگلیسی
The problem of motion of a single electron interacting with a periodic lattice of two-level systems is investigated within a spinless fermion model. The Green's function is calculated in a single-site dynamical coherent potential approximation which is equivalent to DMFT. The picture of one-electron density of states is obtained for various values of the tunnel splitting and coupling between the electron and two-level system. The occurrence of a band splitting with increase of the coupling is demonstrated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 357, Issues 4–5, 18 September 2006, Pages 384-387
نویسندگان
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