Effect of proton irradiation on the fluctuation-induced magnetoconductivity of FeSe1−xTex thin films

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2017_newjphys_ahmad_effect.pdf (1.08 MB)
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URI: http://hdl.handle.net/10347/22797
ISSN: 1367-2630
DOI: 10.1088/1367-2630/aa76ad

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2017

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IOP Publishing
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Abstract

The influence of proton irradiation on the fluctuation-induced magnetoconductivity of high quality FeSe1−xTex (x=0.4, 0.55) (FST) thin films has been investigated. The measurements were performed with magnetic fields up to 13 T applied in the two main crystal directions. The results were interpreted in terms of the Ginzburg–Landau approach for three-dimensional materials under a total-energy cutoff. The analysis shows that properly-tuned proton irradiation does not appreciably affect fundamental superconducting parameters like the Tc value, the upper critical fields or the anisotropy. This has important consequences from the point of view of possible applications due to the enhancement of vortex pinning induced by irradiation.

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Fluctuations| Magnetoconductivity| Lattice strain| FeSe1−xTex thin film

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Ahmad, D., Choi, W. J., Seo, Y. I., Seo, S., Lee, S., Park, T., ... & Kwon, Y. S. (2017). Effect of proton irradiation on the fluctuation-induced magnetoconductivity of FeSe1− x Te x thin films. New Journal of Physics, 19(9), 093004

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YSK was supported by the NRF grant funded by the Ministry of Science, ICT and Future Planning (No. NRF-2015M2B2A9028507 and NRF-2016R1A2B4012672). TP was supported by the NRF grant funded by the Ministry of Science, ICT and Future Planning of Korea (No. 2012R1A3A2048816). JM acknowledges support by project FIS2016-79109-P (AEI/FEDER, UE) and by the Xunta de Galicia (project AGRUP 2015/11). SL was supported by the Global Research Network program through the NRF funded by the Ministry of Science and ICT & Future Planning (NRF-2014S1A2A2028361)

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©2017 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI

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