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Chemical doping and improved flux pinning in Hg-based superconductors

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Abstract

Chemical doping of a small amount (0.02∼0.3) of rhenium (Re) ion into HgBa2Can−1CunOy(n=1∼4) has been studied. The flux pinning strength in these Hg-based superconductors is significantly enhanced compared to the undoped parent materials. Neutron diffraction analysis of representative samples (n=3) revealed that Re partially substitutes the Hg-site with octahedrally fully coordinated oxygen atoms, giving rise to the stabilization of Hg(Re)O layer and reduction of this blocking layer thickness. Associated with the expected hybridization of Re-5d and O-2p orbitals and possible metallization of the Hg(Re)O layer, the improved flux pinning behavior is considered to be caused by the decrease of the electromagnetic anisotropy and the enhanced interlayer superconducting coupling strength.

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References

  1. A. Schilling, M. Cantoni, J.D. Guo and H.R. Ott,Nature(London) 363, 56 (1993).

    Google Scholar 

  2. L. Krusin-Elbaum, C.C. Tsuei and A. Gupta,Nature(London) 373, 679 (1995).

    Google Scholar 

  3. U. Welp, G.W. Crabtree, J.L. Wagner, D.G. Hinks, P.G. Radaelli, J.D. Jorgensen and J.F. MitchellAppl. Phys. Lett. 63, 693 (1993).

    Google Scholar 

  4. A. Umezawa, W. Zhang, A. Grevich, Y. Feng, E.E. Hellstrom and D.C. Larbalestier,Nature 364, 129 (1993).

    Google Scholar 

  5. J. Shimoyama, S. Hahakura, K. Kitazawa, K. Yamafuji and K. Kishio,Physica C224, 1 (1994).

    Google Scholar 

  6. S. Hahakura, J. Shimoyama, O. Shiino and K. Kishio,Physica C233, 1 (1994).

    Google Scholar 

  7. K. Yamaura, J. Shimoyama, S. Hahakura, Z. Hiroi, M. Takano and K. Kishio,Physica C246, 351 (1995).

    Google Scholar 

  8. J. Shimoyama, K. Kishio, S. Hahakura, K. Kitazawa, K. Yamaura, Z. Hiroi and M. Takano,Adv. in Superconductivity VII, 287 (1994).

  9. O. Chmaissem, J.D. Jorgensen, K. Yamaura, Z. Hiroi, M. Takano, J. Shimoyama and K. Kishio,Phys. Rev. B53, 14647 (1996).

    Google Scholar 

  10. K. Kishio, inCoherence in Superconductors, Eds. G. Deutscher and A. Revcolevschi, World Scientific, Singapore, pp. 212–225 (1996).

    Google Scholar 

  11. J.L. Tallon, C. Bernhard, Ch. Niedermayer, J. Shimoyama, S. Hahakura, K. Yamaura, Z. Hiroi and K. Kishio, in This Proceedings.

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Authors and Affiliations

  1. Department of Superconductivity, University of Tokyo, 113, Tokyo, Japan

    K. Kishio, J. Shimoyama, A. Yoshikawa, K. Kitazawa, O. Chmaissem & J. D. Jorgensen

  2. Argonne National Laboratory, 60439, Argonne, Illinois, USA

    O. Chmaissem & J. D. Jorgensen

Authors
  1. K. Kishio
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  2. J. Shimoyama
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  3. A. Yoshikawa
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  4. K. Kitazawa
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  5. O. Chmaissem
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  6. J. D. Jorgensen
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Kishio, K., Shimoyama, J., Yoshikawa, A. et al. Chemical doping and improved flux pinning in Hg-based superconductors. J Low Temp Phys 105, 1359–1365 (1996). https://doi.org/10.1007/BF00753889

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  • DOI: https://doi.org/10.1007/BF00753889

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