کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1819120 | 1525762 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Vortex imaging in Co-doped BaFe2As2
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
We review superconducting vortex imaging in Co-doped BaFe2As2 by Bitter decoration and small-angle neutron scattering (SANS). At all measured fields a highly disordered vortex configuration is observed, which is attributed to strong pinning. Further support of this conclusion comes from the absence of a Meissner rim in decoration images obtained close to the sample edge. The evolution of the SANS scattering vector with increasing applied field indicates vortex lattice domains of (distorted) hexagonal symmetry. This is consistent with the decoration images which show small, six fold coordinated ordered vortex domains. The SANS scattered intensity is found to decrease rapidly with increasing field, exceeding the rate expected from estimates of the upper critical field. This is consistent with the large degree of vortex “lattice” disorder.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 469, Issues 9â12, 1 Mayâ15 June 2009, Pages 529-534
Journal: Physica C: Superconductivity - Volume 469, Issues 9â12, 1 Mayâ15 June 2009, Pages 529-534
نویسندگان
M.R. Eskildsen, L.Ya. Vinnikov, I.S. Veshchunov, T.M. Artemova, T.D. Blasius, J.M. Densmore, C.D. Dewhurst, N. Ni, A. Kreyssig, S.L. Bud'ko, P.C. Canfield, A.I. Goldman,