scholarly journals Enhancement of critical current density in a superconducting NbSe2 step junction

Nanoscale ◽  
2020 ◽  
Vol 12 (22) ◽  
pp. 12076-12082
Author(s):  
Xin He ◽  
Yan Wen ◽  
Chenhui Zhang ◽  
Zhiping Lai ◽  
Eugene M. Chudnovsky ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Transport Properties ◽  
Critical Current ◽  
Current Density ◽  
Vortex Pinning ◽  
Step Junction

We investigate the transport properties of a NbSe2 step junction and verify that the enhancement of the critical current density is due to the vortex pinning at the step junction.

On the through-thickness critical current density of an YBa2Cu3O7−x film containing a high density of insulating, vortex-pinning nanoprecipitates

2007 ◽  
Vol 90 (25) ◽  
pp. 252502 ◽  
Author(s):  
S. I. Kim ◽  
F. Kametani ◽  
Z. Chen ◽  
A. Gurevich ◽  
D. C. Larbalestier ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
High Density ◽  
Vortex Pinning

High critical current density and vortex pinning of epitaxialMgB2thin films

2003 ◽  
Vol 68 (22) ◽  
Author(s):  
S. Y. Xu ◽  
Qi Li ◽  
E. Wertz ◽  
Y. F. Hu ◽  
A. V. Pogrebnyakov ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Vortex Pinning ◽  
High Critical Current Density

Phase Formation and Electrical Transport Properties of Nano-Sized SnO2 Added (Tl0.85Cr0.15)Sr2CaCu2O7-δ Superconductors

2017 ◽  
Vol 268 ◽  
pp. 315-319 ◽  
Author(s):  
Wei Kong ◽  
Ing Kong ◽  
Mohd Mustafa Awang Kechik ◽  
Roslan Abd-Shukor
Keyword(s):  
Critical Current Density ◽  
Transport Properties ◽  
Critical Current ◽  
Phase Formation ◽  
Current Density ◽  
Electrical Transport ◽  
Energy Dispersive ◽  
Transport Critical Current Density ◽  
Electrical Transport Properties ◽  
X Ray

In this work, the effect of nano-sized SnO2 addition on the phase formation and electrical transport properties of (Tl0.85Cr0.15)Sr2CaCu2O7-δ (Tl-1212) superconductor was investigated. Thallium-based high temperature superconductor (HTS) with nominal starting composition (Tl0.85Cr0.15) Sr2CaCu2O7-δ was prepared using high purity oxide powders via solid state reaction method. Nano-sized SnO2 with 0.01 – 0.05 wt.% were added into Tl-1212 superconductors. The characteristic of the samples were determined by powder X-ray diffraction method (XRD), scanning electron microscopy (SEM), energy dispersive X-Ray analysis (EDX), electrical resistance measurements and transport critical current density measurements. Nano-sized SnO2 added (Tl0.85Cr0.15)Sr2CaCu2O7-δ showed Tc-zero between 93 and 95 K. All of the samples indicated a dominant phase of Tl-1212 with a minor phase of Tl-1201. The highest Jc (at 77 K) was shown by sample with 0.03 wt.% at 3260 mA/cm2. SnO2 has significantly enhanced the transport critical current density of Tl-1212 superconductor by acting as flux pinning centers. However, further addition of nano-sized SnO2 in Tl-1212 superconductor caused degradation in Jc. The SEM micrographs with energy dispersive X-Ray analysis (EDX) showed that SnO2 were well distributed in all the samples.

scholarly journals Critical Current Density and Vortex Pinning Strength in the κ-(BEDT-TTF)2Cu[N(CN)2]Br Organic Superconductor

2018 ◽  
Vol 29 (3) ◽  
pp. 13-22
Author(s):  
Youssef Ait Ahmed ◽  
◽  
Ahmed Tirbiyine ◽  
Ahmed Taoufik ◽  
Mohammed Mamor ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Vortex Pinning ◽  
Organic Superconductor

scholarly journals Giant increase of critical current density and vortex pinning in Mn doped KxFe2−ySe2 single crystals

2014 ◽  
Vol 105 (19) ◽  
pp. 192602 ◽  
Author(s):  
Mingtao Li ◽  
La Chen ◽  
Wen-Long You ◽  
Junyi Ge ◽  
Jincang Zhang
Keyword(s):  
Critical Current Density ◽  
Single Crystals ◽  
Critical Current ◽  
Current Density ◽  
Vortex Pinning ◽  
Mn Doped

scholarly journals Enhancement of critical current density and mechanism of vortex pinning in H+-irradiated FeSe single crystal

2015 ◽  
Vol 8 (11) ◽  
pp. 113102 ◽  
Author(s):  
Yue Sun ◽  
Sunseng Pyon ◽  
Tsuyoshi Tamegai ◽  
Ryo Kobayashi ◽  
Tatsuya Watashige ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Single Crystal ◽  
Critical Current ◽  
Current Density ◽  
Vortex Pinning
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