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

L. Jansen and R. Block

Physica A: Statistical Mechanics and its Applications, 1999, vol. 264, issue 3, 523-531

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.

Date: 1999
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:264:y:1999:i:3:p:523-531

DOI: 10.1016/S0378-4371(98)00472-5

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