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Effect of uniaxial stress on critical temperatures of superconducting cuprates: an indirect-exchange approach

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  • Jansen, L.
  • Block, R.

Abstract

A recent paper by Locquet et al. [Nature 394 (1998) 453], reporting a doubling of the critical temperature TCr in La1.9Sr0.1CuO4 (from 25 to 49K) using uniaxial stress, has aroused speculations of reaching much higher TCr values than the present maximum (134K in a mercury cuprate). From a critical analysis, applying concepts of an earlier proposed indirect-exchange approach to high-temperature superconductivity (HTSC), we conclude that a substantial increase of TCr is theoretically restricted to systems with a low initial TCr. Implications for the theory of HTSC inferred in the paper quoted from data on c-axis compression versus TCr are shown to be invalid.

Suggested Citation

  • Jansen, L. & Block, R., 1999. "Effect of uniaxial stress on critical temperatures of superconducting cuprates: an indirect-exchange approach," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 264(3), pages 523-531.
    • Handle: RePEc:eee:phsmap:v:264:y:1999:i:3:p:523-531
    DOI: 10.1016/S0378-4371(98)00472-5
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