کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1868428 | 1530659 | 2006 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhancement of commensurate magnetic resonance energy by the additional second neighbor hopping tâ² in cuprate superconductors
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Within the t-tâ²-J model, the effect of the additional second neighbor hopping tâ² on the spin response of doped cuprates in the superconducting-state is discussed under the kinetic energy driven superconducting mechanism. It is shown that the additional second neighbor hopping tâ² is systematically accompanied with the enhancement of the commensurate magnetic resonance energy, and therefore it plays an important role in quantitatively determining the commensurate magnetic resonance energy. The incommensurate magnetic scattering peaks are found at [(1±δ)Ï,Ï] and [Ï,(1±δ)Ï] at low energy and [(1±δâ²)Ï,(1±δâ²)Ï] at high energy, with the magnetic excitations at high energy disperse almost linearly with energy, and have energies greater than the superconducting gap energy, and are present at the superconducting transition temperature. These incommensurate magnetic scattering peaks from both low and high energies converge to the commensurate [Ï,Ï] magnetic resonance peak at intermediate energy, with the commensurate magnetic resonance energy increases with increasing doping in the underdoped regime, and reaches a maximum in the optimal doping, then decreases in the overdoped regime.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 352, Issues 4â5, 3 April 2006, Pages 438-445
Journal: Physics Letters A - Volume 352, Issues 4â5, 3 April 2006, Pages 438-445
نویسندگان
Shiping Feng, Tianxing Ma, Xintian Wu,