Structural and superconducting properties of HgBa2CuO4+~ over an extended doping range: nonparabolic doping behavior

John L. Wagner; T. M. Clemens; D. C. Mathew; O. Chmaissem; B. Dabrowski; J. D. Jorgensen; David G. Hinks

doi:10.1117/12.397854

6 September 2000 Structural and superconducting properties of HgBa₂CuO_4+δover an extended doping range: nonparabolic doping behavior

John L. Wagner, T. M. Clemens, D. C. Mathew, O. Chmaissem, B. Dabrowski, J. D. Jorgensen, David G. Hinks

Author Affiliations +

Proceedings Volume 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV; (2000) https://doi.org/10.1117/12.397854
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

The structural and superconducting properties of HgBa₂CuO_4+(delta ) have been investigated over a large doping range (0 < (delta) < 0.25). Two series of samples were measured in which oxygen contents were varied through different annealing conditions. Both series are found to have non-parabolic doping behavior as well as unusual structural phenomena in the underdoped region and at maximum T_c. Samples of identical oxygen content are found to have variations in T_c large as 30 K. These differences in superconducting and structural properties are evidence of oxygen/charge ordering present in HgBa₂CuO_4+(delta ). Results are discussed in terms of structural distortions present and possible charge ordering and the formation of filamentary condensates.

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John L. Wagner, T. M. Clemens, D. C. Mathew, O. Chmaissem, B. Dabrowski, J. D. Jorgensen, and David G. Hinks "Structural and superconducting properties of HgBa₂CuO_4+δover an extended doping range: nonparabolic doping behavior", Proc. SPIE 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV, (6 September 2000); https://doi.org/10.1117/12.397854

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