کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1866070 1037920 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Squeezed magnetobipolarons in two-dimensional quantum dot
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Squeezed magnetobipolarons in two-dimensional quantum dot
چکیده انگلیسی

In this Letter, a different method was given for calculating the energies of the magnetobipolarons confined in a parabolic QD (quantum dot). We introduced single-mode squeezed states transformation, which are based on the Lee–Low–Pines and Huybrechts (LLP-H) canonical transformations. This method can provide results not only for the ground state energy but also for the excited states energies. Moreover, it can be applied to the entire range of the electron–phonon coupling strength. Comparing with the results of the LLP-H transformations, we have obtained more accurate results for the ground state energy, excited states energies and binding energy of the bipolarons. It shows that the magnetic field and the quantum dot can facilitate the formation of the bipolarons when η is smaller than some value.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 372, Issue 26, 23 June 2008, Pages 4740–4746
نویسندگان
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