Abstract
The pressure dependence of the transition temperature of the mercury-based cuprates is analyzed through a phenomenological model, based on the inverted parabolic relation between the critical temperature (T c ) and the hole concentration per CuO2 layer (n). It is found that another inverted parabolic relation between the pressure dependence of the superconducting transition temperature at the optimum hole concentration and the pressure fit the recent experimental results of the mercury-based superconductors. This relation leads to a universal relation that is obeyed not only by mercury-based cuprates but also by many other high T c compounds. In contrast to earlier studies, the transition temperature at pressure p (T c (p)) is always less than the transition temperature for the optimum hole concentration (T op c (p)) in agreement with the experiment. The effect of the pressure-induced change in the hole concentration on the transition temperature is found to be small compared to the intrinsic effects.
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REFERENCES
J. S. Schillinmg and S. Klotz, in Physical Properties of High Temperature Superconductors, edited by D. M. Ginsberg (World Scientific, Singapore, 1992) Vol. II.
M. Takahashi and N. Mori, in Studies of High Temperature Superconductors, edited by A. V. Narlikar (Nova Science, New York, 1996) Vol. 16.
S. W. Putilin et al., Nature (London) 362, 226 (1993); A. Schilling et al. Physica C 213, 266 (1993).
L. Gao et al., Phys. Rev. B 50, 4260 (1994).
C. W. Chu et al., Nature 365, 323 (1993).
M. Nunez-Ragueiro et al., Science 262, 97 (1993).
A. K. Kleher et al., Physica C 223, 313 (1994).
J. B. Torrance et al., Phys. Rev. Lett. 61, 1127 (1988).
H. Zhang and H. Sato, Phys. Rev. Lett. 70, 1697 (1993).
C. Murayama et al. Physica C 183, 277 (1991).
J. S. Zhou and J. B. Goodenough, Phys. Rev. Lett. 77, 151 (1996).
J. D. Jorgensen et al., Physica C 171, 93 (1990).
D. J. Singh and W. E. Pickett, Physica C 223, 237 (1994).
Y. Cao et al., Phys. Rev. B 52, 6854 (1995).
X. D. Qui et al., Physica C 282–287, 885 (1997).
C. Acha et al., Phys. Rev. B 57, R5630 (1998).
Y. J. Uemura et al., Phys. Rev. Lett. 66, 2665 (1991); Y. J. Uemura et al., Phys. Rev. Lett. 62, 2317 (1989).
T. Scneider and H. Keller, Phys. Rev. Lett. 69, 3374 (1992).
R. P. Gupta and M. Gupta, Phys. Rev. B 51, 11760 (1995).
X. Chen and Z. Jiao, Phys. Rev. B 56, 6302 (1997).
C. C. Almasan et al., Phys. Rev. Lett. 69, 680 (1992).
J. J. Neumeier and H. A. Zimmerman, Phys. Rev. B 47, 8385 (1993).
D. Tristan et al., Phys. Rev. B 55, 11832 (1997).
D. D. Berkley et al., Phys. Rev. B 47, 5524 (1993).
V. Z. Kresin, S. A. Wolf and Yu. N. Ovchinnikov, Phys. Rev. B 53, 11831 (1996).
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Kishore, R., Lamba, S. Effect of Pressure on the Superconducting Transition Temperature in Mercury-Based Cuprates. Journal of Superconductivity 13, 613–616 (2000). https://doi.org/10.1023/A:1007885103686
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DOI: https://doi.org/10.1023/A:1007885103686