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Specific Heat of YBa2Cu3O7−−δ and (La2−xSrx)CuO4: Evidence for d-Wave Pairing

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Abstract

New low-temperature specific-heat data for YBa2Cu3O7−δ, 0≤δ≤0.2, and (La1.85Sr0.15)CuO4 in magnetic fields (H) to 9 T are reported. They show features predicted for the lines of nodes in the energy gap that are expected for d-wave pairing; for H=0, a T 2 term; for H≠0 an H 1/2 T term with a crossover to a more complicated T dependence at higher T and lower H. The results are compared with recent measurements in other laboratories.

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Author notes

  1. A. Schilling

    Present address: Physik-Institut der Universität Z¨rich, Winterthurstr. 190, CH-8057, Z¨rich, Switzerland

  2. B. F. Woodfield

    Present address: Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah, 84602

Authors and Affiliations

  1. Lawrence Berkeley National Laboratory, Berkeley, California, 94720

    N. E. Phillips, J. P. Emerson, R. A. Fisher, J. E. Gordon, A. Schilling, B. F. Woodfield & D. A. Wright

  2. CEA/Grenoble, DRFMC/LCP, 17 rue des martyrs, 38042, Grenoble 9, France

    B. Buffeteau, R. Calemczuk & C. Marcenat

  3. Ames Laboratory, Iowa State University, Ames, Iowa, 50011

    K. W. Dennis, T. E. Hargreaves, R. W. McCallum & A. S. O'Connor

  4. Department of Physics, Amherst College, Amherst, Massachusetts, 01002

    J. E. Gordon

Authors
  1. N. E. Phillips
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  2. B. Buffeteau
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  3. R. Calemczuk
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  4. K. W. Dennis
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  5. J. P. Emerson
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  6. R. A. Fisher
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  7. J. E. Gordon
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  8. T. E. Hargreaves
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  9. C. Marcenat
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  10. R. W. McCallum
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  11. A. S. O'Connor
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  12. A. Schilling
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  13. B. F. Woodfield
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  14. D. A. Wright
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Phillips, N.E., Buffeteau, B., Calemczuk, R. et al. Specific Heat of YBa2Cu3O7−−δ and (La2−xSrx)CuO4: Evidence for d-Wave Pairing. Journal of Superconductivity 12, 105–111 (1999). https://doi.org/10.1023/A:1007790107549

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  • DOI: https://doi.org/10.1023/A:1007790107549

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