Abstract
Results of our NMR measurements of highT c superconductors are reviewed. From systematic measurements of NQR frequency, Knight shift, nuclear spin lattice relaxation rate and nuclear transverse relaxation rate over a wide hole concentration range from light to heavy doped compounds together with the impurity and pressure effect, following results are concluded. The numbers of the holes at the respective sites of Cu and O site in the CuO2 plane govern the several physical properties of the system. There are optimum values of these hole numbers to produce highestT c . The superconducting properties are well explained consistently by thed-wave pairing model.T c is found to be correlated intimately with the antiferromagnetic spin fluctuation parameters that governs the nuclear relaxation. The mechanism for the superconductivity is magnetic in origin.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
For example, K. Asayama, Y. Kitaoka, G.-q. Zheng and K. Ishida, Progress in nuclear magnetic resonance spectroscopy,28 part 3/4 (1996) 221.
G.-q. Zheng, Y. Kitaoka, K. Ishida and K. Asayama, J. Phys. Soc. Jpn.64 (1995) 2524.
K. Ishida, Y. Kitaoka, T. Yoshitomi, N. Ogata, T. Kamino and K. Asayama, Physica C179 (1991) 29. K. Ishida, Y. Kitaoka, N. Ogata, T. Kamino, K. Asayama, J.R. Cooper, and N. Athanassopoulou, J. Phys. Soc. Jpn.62 (1993) 2803. Y. Kitaokaet al. submitted Phys. Rev. Lett.
S. Schmitt-Rink, K. Miyake and C.M. Varma, Phys. Rev. Lett.,57 (1986) 2575. P.J. Hirschfeld, D. Vollhardt and P. Wolfe, Solid State Commun.,59 (1986) 111.
Y. Onishi, Y. Ohashi, Y. Shingaki and K. Miyake, J. Phys. Soc. Jpn.,65 (1996) 675.
T. Hotta (1992), unpublished results.
C. Hammel, M. Takigawa, R.H. Heffer, Z. Fisk and K.C. Ott, Phys. Rev. Lett.,63 (1989) 1992. Y. Kohoriet al., J. Mag. Mag. Mat.,90 & 91 (1990) 667. Y. Yoshinari, H. Yasuoka and Y. Ueda, J. Phys. Soc. Jpn.61 (1992) 770. J.A. Maltindale, S.E. Barett, K.E. O'Hara, C.P. Slichter, W.C. Lee and D.M. Ginsberg, Phys. Rev. B47 (1993) 9155.
N. Bulut and D.J. Scalapino, Phys. Rev. Lett.,67 (1991) 2898.
K. Ishida, Y. Kitaoka, K. Asayama, K. Kadowaki and T. Mochiku, J. Phys. Soc. Jpn.63 (1994) 1104.
G.-q. Zheng, Y. Kitaoka, K. Asayama, K. Hamada, Y. Yamauchi and S. Tanaka, Physica C260 (1996) 197. G.-q. Zhenget al. in preparation.
Y. Tokunaga, K. Ishida, Y. Kitaoka and K. Asayama, submitted to Phys. Rev. Lett. Proc. 21th Int. Conf. Low Temp. Phys., Prague (1996).
T. Moriya, T. Takahashi and K. Ueda, J. Phys. Soc. Jpn.59 (1990) 2905. K. Ueda, T. Moriya and Y. Takahashi, J. Phys. Chem. Solids,53 (1992) 1515. T. Moriya and K. Ueda, J. Phys. Soc. Jpn.,63 (1994) 1871.
D. Monthoux, A.V. Balatsky and D. Pines, Phys. Rev. Lett.67 (1991) 3448. D. Pines, Physica C185–189 (1991) 120. D. Monthoux and D. Pines, Phys. Rev.47 (1993) 6069, Phy. Rev. B49 (1994) 4261.
D. Thelen and D. Pines, Phys. Rev. B42 (1990) 167.
Y. Itoh, H. Yasuoka, A. Hayashi and Y. Ueda, J. Phys. Soc. Jpn.63 (1994) 22.
K. Magishi, G.-q. Zheng, Y. Kitaoka and K. Asayama, J. Phys. Soc. Jpn.64 (1995) 4561.
K. Magishiet al., Proc. 21th Int. Conf. Low Temp. Physics, Prague (1996).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Asayama, K., Kitaoka, Y., Zheng, G.q. et al. NMR of highT c superconductors. Czech J Phys 46 (Suppl 6), 3187–3194 (1996). https://doi.org/10.1007/BF02548129
Issue Date:
DOI: https://doi.org/10.1007/BF02548129