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Proceedings Paper

Structural and superconducting properties of HgBa2CuO4+~ over an extended doping range: nonparabolic doping behavior
Author(s): John L. Wagner; T. M. Clemens; D. C. Mathew; O. Chmaissem; B. Dabrowski; J. D. Jorgensen; David G. Hinks
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Paper Abstract

The structural and superconducting properties of HgBa2CuO4+(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 Tc. Samples of identical oxygen content are found to have variations in Tc large as 30 K. These differences in superconducting and structural properties are evidence of oxygen/charge ordering present in HgBa2CuO4+(delta ). Results are discussed in terms of structural distortions present and possible charge ordering and the formation of filamentary condensates.

Paper Details

Date Published: 6 September 2000
PDF: 8 pages
Proc. SPIE 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV, (6 September 2000); doi: 10.1117/12.397854
Show Author Affiliations
John L. Wagner, Univ. of North Dakota (United States)
T. M. Clemens, Univ. of North Dakota (United States)
D. C. Mathew, Univ. of North Dakota (United States)
O. Chmaissem, Northern Illinois Univ. (United States)
B. Dabrowski, Northern Illinois Univ. (United States)
J. D. Jorgensen, Argonne National Lab. (United States)
David G. Hinks, Northern Illinois Univ. (United States)

Published in SPIE Proceedings Vol. 4058:
Superconducting and Related Oxides: Physics and Nanoengineering IV
Davor Pavuna; Ivan Bozovic, Editor(s)

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