کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1860361 1037427 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Momentum dependence of quasiparticle spectrum and Bogoliubov angle in cuprate superconductors
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Momentum dependence of quasiparticle spectrum and Bogoliubov angle in cuprate superconductors
چکیده انگلیسی
The momentum dependence of the low energy quasiparticle spectrum and the related Bogoliubov angle in cuprate superconductors are studied within the kinetic energy driven superconducting mechanism. By calculation of the ratio of the low energy quasiparticle spectra at positive and negative energies, it is shown that the Bogoliubov angle increases monotonically across the Fermi crossing point. The results also show that the superconducting coherence of the low energy quasiparticle peak is well described by a simple d-wave Bardeen-Cooper-Schrieffer formalism, although the pairing mechanism is driven by the kinetic energy by exchanging spin excitations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 374, Issue 4, 11 January 2010, Pages 632-636
نویسندگان
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