کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1787322 1023438 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The role of doping and pressure in Hg based high Tc cuprates: A theoretical study
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
The role of doping and pressure in Hg based high Tc cuprates: A theoretical study
چکیده انگلیسی
We present a series of first-principles calculations for Hg based high Tc cuprates investigating the effect of pressure, doping, and composition on the electronic and crystalline structure. In particular, the total and site-projected hole concentration in the CuO2 planes and the density of states are studied in detail. We discuss effects of inhomogeneity introduced by doping and the limitations on creating holes by either doping, pressure, or the number of CuO2 layers per unit cell. From an analysis and comparison of our results to available experimental data on the pressure dependence of Tc, we conclude that the effective coupling constant to the boson mediating the Cooper pairing is of the order of 1 ruling out the weak coupling approaches.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 8, Issue 2, March 2008, Pages 149-152
نویسندگان
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