Scaling law for vortex dynamics in Rb3C60 superconductor

Lee, M.W.; Tai, M. F.; Shi, Jen–Bin

doi:10.1016/s0921-4534(96)00593-x

Physica C: Superconductivity

1996

DOI: 10.1016/s0921-4534(96)00593-x

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Scaling law for vortex dynamics in Rb3C60 superconductor

M.W. Lee

M. F. Tai

Jen–Bin Shi

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Cited by 8 publications

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“…We have measured the dependence of T irr on ac amplitudes h ac at dc field H = 3.0 T and ac frequency f = 1777 Hz, and the results are shown in the inset of figure 3(a). According to the Ginzburg-Landau theory [29] and collective pinning activation energy framework [30,31], at fixed dc magnetic field and ac frequency, the ac field amplitude h ac and temperature T irr follows the equation:…”

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confidence: 99%

From δl- to δT _c-pinning in CaKFe₄As₄ single crystals obtained by adjusting their defect structures

Wang¹,

He²,

Chen³

et al. 2021

Supercond. Sci. Technol.

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We have investigated the vortices pinning behaviors of CaKFe4As4 with two types of defect structures by alternating current and direct current susceptibility measurements under the Ginzburg-Landau theory and collective pinning model. We observed a new dissipative peak at temperature T J in each out-of-phase () curve even at low magnetic field in the samples with thick CaFe2As2 intercalations, which has been ascribed to the weak Josephson-like link. The unrelaxed current J c and the normalized pinning energy g(t) have been investigated for both types of the CaKFe4As4 crystals based on the dynamic relaxation rate Q and transient current J s by means of generalized inversion scheme. For the samples with monolayer-KFe2As2 intercalations, the temperature dependence of J c and g(t) is found to be in agreement well with the model of single vortex δT c-pinning. But for the samples with thick CaFe2As2 intergrowths, both the δT c- and δl-pinning are in functioning at low magnetic field, but the δl pinning will play a leading role at magnetic field above 3.0 T. Differential charge analysis shows that the intergrowth of KFe2As2 should be normal phase and the CaFe2As2 will become superconducting one due to the charge transfer. The non-superconducting KFe2As2 will induce an abruptly spatial change of T c resulting to strong δT c-pinning, and the superconducting CaFe2As2 phase can mainly cause to fluctuate of mean free path leading to δl-pinning. The present work illustrates how the defect structure affects the flux pinning behaviors and can provide a new clue to design high-performance superconducting wire/tapes and films for strong magnetic field applications.

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mentioning

confidence: 99%

From δl- to δT _c-pinning in CaKFe₄As₄ single crystals obtained by adjusting their defect structures

Wang¹,

He²,

Chen³

et al. 2021

Supercond. Sci. Technol.

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Frequency Response of AC Susceptibility in Melt Textured YBCO Superconductors

Liu

et al. 2005

J Supercond

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Scaling Analysis of Conductivity-Related Quantities of YBCO Using Ac Loss Peak Temperature as Scaling Parameter

Bhattacharya

Neogy

2013

J Supercond Nov Magn

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Scaling law for vortex dynamics in Rb3C60 superconductor

Cited by 8 publications

References 10 publications

From δl- to δT _c-pinning in CaKFe₄As₄ single crystals obtained by adjusting their defect structures

From δl- to δT _c-pinning in CaKFe₄As₄ single crystals obtained by adjusting their defect structures

Frequency Response of AC Susceptibility in Melt Textured YBCO Superconductors

Scaling Analysis of Conductivity-Related Quantities of YBCO Using Ac Loss Peak Temperature as Scaling Parameter

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Product

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About

Scaling law for vortex dynamics in Rb3C60 superconductor

Cited by 8 publications

References 10 publications

From δl- to δT c-pinning in CaKFe4As4 single crystals obtained by adjusting their defect structures

From δl- to δT c-pinning in CaKFe4As4 single crystals obtained by adjusting their defect structures

Frequency Response of AC Susceptibility in Melt Textured YBCO Superconductors

Scaling Analysis of Conductivity-Related Quantities of YBCO Using Ac Loss Peak Temperature as Scaling Parameter

Contact Info

Product

Resources

About

From δl- to δT _c-pinning in CaKFe₄As₄ single crystals obtained by adjusting their defect structures

From δl- to δT _c-pinning in CaKFe₄As₄ single crystals obtained by adjusting their defect structures