Abstract
Y(Ba1−x Gd x )2Cu3O7−δ compounds with x = 0 ∼ 0.15 are prepared using the solid reaction technique. With structure analysis by Rietveld refinement of x-ray diffraction, we find that Gd3+ ions prefer to occupy Y sites within lighter doping x ≤ 0.08 due to ion size effects, then begin partially to occupy Ba sites with doping content increasing, which gives vital influence on superconductivity and spin-gap properties. The magnetic doping effects of Gd3+ ions on spin-gap properties are investigated in detail by contrast of the distinguished behaviors between T* and T c, indicating that spin-gap temperature is not completely determined by the carrier density, but strongly dependent on the strength of interplane antiferromagnetic coupling. Finally, we propose an expression of in-plane resistivity dependent on the maximal width of spin-gap Δ0 to derive their values for different samples, which almost keep constant with the increase of Gd doping contents.
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REFERENCES
J. Scalapino, Phys. Rep. 250, 329 (1995).
A. V. Chubukov, D. Pines, and B. P. Stojkovic, J. Phys. Condens. Mat. 8, 10017 (1996).
T. Moriya, Y. Takahasi, and K. Ueda, J. Phys. Soc. Jpn. 59, 2905 (1990).
T. Ito, K. Rakenaka, and S. Uchida, Phys. Rev. Lett. 21, 3995 (1993).
A. P. Kampf, Phys. Rep. 249, 219 (1994).
M. Gurvitch and A. T. Fiory, Phys. Rev. Lett. 59, 1337 (1987).
D. B. Tanner and T. Timusk, in Physical Properties of High-Temperature Superconductors, edited by D. M. Ginsberg (World Scientific, Singapore, 1992), Vol. 3, p. 416.
T. Moriya, Y. Takahasi, and K. Ueda, J. Phys. Soc. Jpn. 59, 2905 (1990).
P. W. Anderson and Z. Zou, Phys. Rev. Lett. 60, 132 (1988).
C. M. Varma, P. B. Littlewood, S. Schmitt-Rind, E. Abbrahams, and A. E. Ruckenstein, Phys. Rev. Lett. 63, 1996 (1989).
H. Yasuoks, T. Imai, and T. Shimizu, in Strong Correlation and Superconductivity (Springer Verlag, 1989). H. Fukuyama, S. Maekawa, and A. P. Malozemoff (eds.), p. 254.
A. J. Millis and H. Monien, Phys. Rev. Lett. 70, 2810 (1993).
K. Asayama, Y. Kitaoka, G.-Q. Zheng, and K. Ishida, Prog. Nuc. Magn. Res. Spectros. 28, 221 (1996).
M. H. Julien, P. Carretta, M. Horvatic, C. Berthier, Y. Berthier, P. Se´gransan, A. Carrigton, and D. Colson, Phys. Rev. Lett. 76, 4238 (1996).
T. Tanamoto, H. Kohno, and H. Fukuyama, J. Phys. Soc. Jpn. 62, 717 (1993); 63, 2739 (1994).
H. Fukuyama and H. Kohno, Physica C 282–287, 124 (1997).
P. W. Anderson, Phys. Condens. Mat. 8, 10083 (1996).
M. U. Ubbens and P. A. Lee, Phys. Rev. B 50, 438 (1994); Phys. Rev. Lett. 63, 680 (1998).
B. L. Altshuler, L. B. Ioffe, and A. J. Millis, Phys. Rev. B 53, 415 (1996).
I. Francois, C. Jaekel, G. Kyas, D. Dierickx, O. Van der Biest, R. M. Heeres, V. V. Moshchalkov, Y. Bruynseraede, H. G. Roskos, G. Borghs, and H. Kurz, Phys. Rev. B 53, 12502 (1996).
S. J. Liu and W. Guan, Phys. Rev. B 58, 11716 (1998).
G. C. Vezzoli, B. M. Moon, M. F. Chen, T. Burke, and F. Craver, in High-Temperature Superconductivity, J. Ashkenazi, S. E. Barnes, F. Zuo, G. C. Vezzoli, and B. M. Klein (eds.), (Plenum Press, New York, 1991) p. 257.
Y. Feng, L. Zhou, J. G. Wen, N. Koshizuka, A. Sulpice, J. L. Tholence, J. C. Vallier, and P. Monceau, Physica C 297, 75 (1998).
W. M. Chen, K. Shen, Y. C. Guo, J. Chen, and S. X. Dou, J. Supercond. 11, 347 (1998).
X. S. Wu and J. Gao, Physica C 313, 79 (1999).
F. Izumi and K. Zasski, 17, 37 (1985).
G. K. Werthein, M. A. Bulter, K. W. West, D. N. E. Buchanan, Rev. Sci. Instr. 11, 243 (1974).
J. Lin, F. Wang, X. S. Wu, et al. to be published.
W. H. Tang and J. Gao, Physica C 298, 66 (1998).
X. S. Wu and J. Gao, Physica C 313, 49 (1999).
J. Fink, N. Nucker, H. Romberg, M. Alexander, M. B. Maple, J. J. Neumeier, J. W. Allen, Phys. Rev. B 42, 640 (1990).
A. A. Abrikosov and L. P. Gor'kov, Zh. Eksp. Teor. Fiz. 39, 1781 (1960).
H. A. Blackstead, J. D. Dow, J. F. Federici, W. E. Packard, and D. B. Pulling, Physica C 235–240, 2161 (1994).
H. A. Blackstead and J. D. Dow, in Proceedings of the Second International Symposium on Quantum Confinement Physics and Applications, M. Cahay, S. Bandyopadhayay, J. P. Leburton, A. W. Kleinsasser, and M. A. Osman (eds.) (Electric-Chemical Society, Pennington, NJ, 1994), Vol. 94–17, 408.
Y. J. Uemura, G. M. Luke, and B. J. Sternlieb, Phys. Rev. B 62, 2317 (1989).
H. A. Blackstead and J. D. Dow, Supperlatt. Microstruct. 14, 231 (1993).
See, for example H. A. Blackstead and J. D. Dow, Phys. Rev. B 51, 11830 (1995), and some references listed in it.
S. Sachdev, Phys. Rev. B 45, 389 (1992).
H. Fukuyama, Prog. Theor. Phys. Suppl. 108, 287 (1992).
P. A. Lee, Pysica C 281–287, 279 (1997).
B. L. Altshwler, I. B. Ioffe, Sol. State Commun. 82, 253 (1992).
F. Wang, X. Jin, et al., to be published.
H. Ding, Nature 382, 51 (1996).
S. Uchida, Physica C 282–287, 12 (1997).
K. Gorny, O. M. Vyasekev, J. A. Nandor, C. H. Pennington, P. C. Hammel, W. L. Hults, J. L.
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Wang, F., Lin, J., Xu, X.N. et al. Spin Gap Characteristic of Y(Ba1−xGdx)2Cu3O7−δ. Journal of Superconductivity 13, 393–400 (2000). https://doi.org/10.1023/A:1007746824022
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DOI: https://doi.org/10.1023/A:1007746824022