Abstract
In spite of their layered crystal structure, the new class of intermetallic borocarbide superconductors (typified by LuNi2B2C) have three-dimensional conduction with anisotropy being a minor factor. The calculated electron-phonon coupling constants are consistent with a picture of moderate- to strong-coupling conventional superconductivity, with large contributions from boron vibrations. We report several calculated material parameters for members of this class of compounds, and compare with some of the experimental data.
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R. Nagarajan, C. Mazumdar, Z. Hossain, S. K. Dhar, K. V. Gopalakrishnan, L. C. Gupta, C. Godart, B. D. Padalia, and R. Vijayaraghavan, Phys. Rev. Lett.72, 274 (1994).
R. J. Cava, H. Takagi, B. Batlogg, H. W. Zandbergen, J. J. Krajewski, W. F. Peck, Jr., R. B. van Dover, R. J. Felder, T. Siegrist, K. Mizuhashi, J. O. Lee, H. Eisaki, S. A. Carter, and S. Uchida, Nature367, 146 (1994); ibid.,367, 252 (1994).
T. Siegrist, H. W. Zandbergen, R. J. Cava, J. J. Krajewski, and W. F. Peck, Jr., Nature367, 254 (1994).
W.E. Pickett and D. J. Singh, Phys. Rev. Lett.72, 3702 (1994).
D. Singh, Phys. Rev. B43, 6388 (1991).
D.J. Singh, Planewaves Pseudopotentials and the LAPW Method, (Kluwer Academic, Boston, 1994) and references therein.
L. F. Mattheiss, Phys. Rev. B49, 13279 (1994).
W. H. Butler and P. B. Allen, inSuperconductivity in d- and f-band Metals, ed. D. H. Douglass (Plenum, New York, 1976).
H. Takagi, R. J. Cava, H. Eisaki, J. O. Lee, K. Mizuhashi, B. Batlogg, S. Uchida, J. J. Krajewski, and W. F. Peck, Jr., Physica C228, 389 (1994).
D. J. Singh, Phys. Rev. B50, 6486 (1994).
M. S. Golden, M. Knupfer, M. Kielwein, M. Buchgeister, J. Fink, D. Teehan, W. E. Pickett, and D. J. Singh, Europhys. Lett.28, 369 (1994).
B. C. Chakoumakos and M. Paranthaman, Physica C (in press).
V. G. Hadjiev, L. N. Bozukov, and M. G. Baychev, Phys. Rev. B50, 16726 (1994).
G. D. Gaspari and B. L. Gyorffy, Phys. Rev. Lett.29, 801 (1972).
D. D. Lawrie and J. P. Franck, Physica C (in press).
L. F. Mattheiss, T. Siegrist, and R. J. Cava, Solid State Commun.91, 587 (1994).
R. J. Cava, H. W. Zanbergen, B. Batlogg, H. Eisaki, H. Takagi, J. J. Krajewski, W. F. Peck, Jr., E. M. Gyorgy, and S. Uchida, Nature372, 245 (1994).
D. J. Singh and W. E. Pickett (preprint).
H. W. Zandbergen, J. Jansen, R. J. Cava, J. J. Krajewski, and W. F. Peck, Jr., Nature372, 759 (1994).
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Pickett, W.E., Singh, D.J. New class of intermetallic borocarbide superconductors: Electron-phonon coupling and physical parameters. J Supercond 8, 425–428 (1995). https://doi.org/10.1007/BF00722821
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DOI: https://doi.org/10.1007/BF00722821