کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1866597 | 1530665 | 2006 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhancement of superconducting transition temperature by the additional second neighbor hopping tâ² in the t-J model
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Within the kinetic energy driven superconducting mechanism, the effect of the additional second neighbor hopping tâ² on the superconducting state of the t-J model is discussed. It is shown that tâ² plays an important role in enhancing the superconducting transition temperature of the t-J model. It is also shown that the superconducting-state of cuprate superconductors is the conventional Bardeen-Cooper-Schrieffer like, so that the basic Bardeen-Cooper-Schrieffer formalism is still valid in quantitatively reproducing the doping dependence of the superconducting gap parameter and superconducting transition temperature, and electron spectral function at [Ï,0] point, although the pairing mechanism is driven by the kinetic energy by exchanging dressed spin excitations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 350, Issues 1â2, 30 January 2006, Pages 138-146
Journal: Physics Letters A - Volume 350, Issues 1â2, 30 January 2006, Pages 138-146
نویسندگان
Shiping Feng, Tianxing Ma,