کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1812306 | 1025613 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermoelectric power of single-orbital and two-orbital Hubbard models on triangular lattices
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Thermoelectric power of single-orbital and two-orbital Hubbard models on triangular lattices Thermoelectric power of single-orbital and two-orbital Hubbard models on triangular lattices](/preview/png/1812306.png)
چکیده انگلیسی
The thermoelectric power of the single-orbital and two-orbital correlated electron systems on a two-dimensional triangular lattice is investigated by the dynamical mean field theory with the exact diagonalization solver at finite temperature. It reveals that for the hole doping case, the geometrical frustration together with the Coulomb interaction greatly enhances thermoelectric power, in comparison with the electron doping case. In an anisotropic triangular lattice, we find a large thermoelectric power in the direction with small hopping integral in the anisotropic systems. In the two-orbital systems, we show that though the orbital entropy contributes to thermoelectric power, Hund's rule coupling may suppress the large thermoelectric power.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 405, Issue 19, 1 October 2010, Pages 4145-4150
Journal: Physica B: Condensed Matter - Volume 405, Issue 19, 1 October 2010, Pages 4145-4150
نویسندگان
Xian-Lu Gu, Feng Lu, Da-Yong Liu, Liang-Jian Zou,