کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1810892 | 1025574 | 2012 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Vortex pinning: A probe for nanoscale disorder in iron-based superconductors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The pinning of quantized flux lines, or vortices, in the mixed state is used to quantify the effect of impurities in iron-based superconductors (IBS). Disorder at two length scales is relevant in these materials. Strong flux pinning resulting from nm-scale heterogeneity of the superconducting properties leads to the very disordered vortex ensembles observed in the IBS, and to the pronounced maximum in the critical current density jc at low magnetic fields. Disorder at the atomic scale, most likely induced by the dopant atoms, leads to “weak collective pinning” and a magnetic field-independent contribution jccoll. The latter allows one to estimate quasiparticle scattering rates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 407, Issue 11, 1 June 2012, Pages 1746-1749
Journal: Physica B: Condensed Matter - Volume 407, Issue 11, 1 June 2012, Pages 1746-1749
نویسندگان
C.J. van der Beek, S. Demirdis, M. Konczykowski, Y. Fasano, N.R. Cejas Bolecek, H. Pastoriza, D. Colson, F. Rullier-Albenque,