کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9841530 1525792 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Superfluid density and pairing in planar organic superconductors
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Superfluid density and pairing in planar organic superconductors
چکیده انگلیسی
We calculate self-consistently in-plane superfluid density ρ∥s in planar organic superconductors for three types of pairing symmetry: dx2-y2, dxy-like and extended s-wave pairing. Assuming strong dimerization, we consider a single band model with elliptical Fermi surface to evaluate the temperature dependence ρ∥s(T) in κ-(BEDT-TTF)2X compounds for those types of pairing. The obtained results, compared with measurements of the superfluid density in κ-(BEDT-TTF)2Cu[N(CN)2]Br, strongly suggest that in these compounds the gap symmetry, influenced by cooling history, in the “ground state” with the least disorder is of the extended s-wave type. Possible physical reasons for agreement of dx2-y2, and/or isotropic s-wave pairing with experimental results in more disordered “intermediate state” are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 432, Issues 3–4, 15 November 2005, Pages 140-146
نویسندگان
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