What is the symmetry of the high T{sub c} order parameter?

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In recent years, there has been a raging controversy regarding the orbital symmetry of the superconducting order parameter (OP) in the high temperature superconductors. Many experiments were interpreted in terms of a d{sub x{sup 2}-y{sup 2}}-wave OP, but many others were interpreted in terms of a more conventional s-wave OP. We review the problems of both intrinsic and extrinsic natures with the phase-sensitive experiments on YBCO. The authors further show that the photoemission experiments of the purported superconducting gap in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub g+{delta}} are entirely consistent with charge- and/or spin-density wave formation in that material. The presence of ... continued below

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12 p.

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Klemm, R. A. April 16, 1998.

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In recent years, there has been a raging controversy regarding the orbital symmetry of the superconducting order parameter (OP) in the high temperature superconductors. Many experiments were interpreted in terms of a d{sub x{sup 2}-y{sup 2}}-wave OP, but many others were interpreted in terms of a more conventional s-wave OP. We review the problems of both intrinsic and extrinsic natures with the phase-sensitive experiments on YBCO. The authors further show that the photoemission experiments of the purported superconducting gap in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub g+{delta}} are entirely consistent with charge- and/or spin-density wave formation in that material. The presence of such density waves greatly complicates the analysis of most experiments. Hence, we conclude that the orbital symmetry of the superconducting OP is still unknown in any of the high temperature superconductors.

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12 p.

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OSTI as DE00008904

Medium: P; Size: 12 pages

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  • 1st International Conference on New Theories, Discoveries, and Applications of Superconductors and Related Materials, Baton Rouge, LA (US), 02/19/1998--02/24/1998

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  • Report No.: ANL/MSD/CP-95045
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 8904
  • Archival Resource Key: ark:/67531/metadc793855

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  • April 16, 1998

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  • Dec. 19, 2015, 7:14 p.m.

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  • April 6, 2017, 8:12 p.m.

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Klemm, R. A. What is the symmetry of the high T{sub c} order parameter?, article, April 16, 1998; Illinois. (digital.library.unt.edu/ark:/67531/metadc793855/: accessed December 9, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.