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Critical current densities and flux creep rates in near optimally doped BaFe2-xRuxAs2 (x≈0.7) single crystals

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Title
Critical current densities and flux creep rates in near optimally doped BaFe2-xRuxAs2 (x≈0.7) single crystals
Author(s)
Haberkorn N.; Eom M.J.; You J.S.; Jeehoon Kim; Kim J.S.
Publication Date
2016-04
Journal
SOLID STATE COMMUNICATIONS, v.231, no., pp.26 - 30
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Abstract
We present an investigation of the critical current densities Jc and flux creep rates in a near optimally doped BaFe2-xRuxAs2 (x≈0.7) single crystal by (measuring magnetization). The superconducting critical temperature is 18 K. The in-field dependences of the critical current density Jc are due to a mixed pinning scenario produced mainly by large precipitates and a less significant contribution of random disorder. Furthermore, a Maley analysis in the regime dominated by strong pinning centers (μ0H=0.1 T) is well described through a glassy exponent μ=1.9 and a collective pinning energy (U0) smaller than 100 K. © 2016 Elsevier Ltd
URI
https://pr.ibs.re.kr/handle/8788114/2468
ISSN
0038-1098
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > Journal Papers (저널논문)
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