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Likholetova, M. V., Lezova, I. E., Shevchenko, E. V., Charnaya, E. V., Lee, M. K., Chang, L.-J., Kumzerov, Y. A., & Fokin, A. V. (2018). Superconductivity in Nanostructured Ga-Ag Eutectic Alloy. KnE Engineering, 3(6), 416–421. https://doi.org/10.18502/keg.v3i6.3022

https://doi.org/10.18502/keg.v3i6.3022

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authors

  • M V Likholetova
    No author data available.
  • I E Lezova
    No author data available.
  • E V Shevchenko
    No author data available.
  • E V Charnaya
    No author data available.
  • M K Lee
    No author data available.
  • L-J Chang
    No author data available.
  • Y A Kumzerov
    No author data available.
  • A V Fokin
    No author data available.

Published Date

  • Oct 8, 2018

Superconductivity in Nanostructured Ga-Ag Eutectic Alloy

KnE Engineering / Breakthrough directions of scientific research at MEPhI: Development prospects within the Strategic Academic Units / Pages 416–421

Abstract

The dc and ac magnetizations were studied for the eutectic Ga-Ag alloy embedded into a porous glass with 7 nm mean pore size. The measurements were performed within a temperature range of 1.9 to 10 K which covers the superconducting transition for the nanocomposite. The onset of superconductivity at the magnetic field 10 Oe was found at about 7.1 K which is much higher than in bulk gallium. The phase diagram showed a positive curvature at low magnetic fields. The activation energy of vortex mobility was calculated at different magnetic fields using the ac data.


 


 


Keywords: Ga-Ag eutectic alloy, superconductivity, nanoconfinement

References
[1] M.K. Lee, E.V. Charnaya, C. Tien, L.J. Chang, Yu.A. Kumzerov. J. Appl. Phys. 113, 113903 (2013).


[2] C. Tien, E.V. Charnaya, D.Y. Xing, A.L. Pirozerskii, Yu.A. Kumzerov, Y.S. Ciou, M.K. Lee. Phys. Rev. B 83, 014502 (2011).


[3] E.V. Charnaya, C. Tien, M.K. Lee, Yu.A. Kumzerov. J. Phys.: Cond. Matter 21, 455304 (2009).


[4] N. Kurita, M. Kimata, K. Kodama, et al. Phys. Rev. B 83, 100501 (2011).


[5] H. S. Lee, M. Bartkowiak, J. H. Park, et al. Phys. Rev. B 80, 144512 (2009).


[6] A.A. Kopasov, D.A. Savinov, A.S. Mel’nikov. Phys. Rev. B 95, 104520 (2017).