Abstract
Neutron-scattering studies /1/ revealed the existence of anomalies in the phonon dispersion curves (Fig.1) of superconducting transition metal compounds such as the carbides and nitrides, thus establishing an empirical correlation between actual or incipient lattice instabilities and high superconducting transition temperatures. These instabilities are usually associated with a relatively high density of d-states at the Fermi level. However, this is in direct contradiction to the fact that both the superconductivity and the phonon anomalies disappear when we go from the carbides and nitrides to the oxides, or introduce vacancies, whereas the d-electron density of states further increases.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
H.G. Smith and W. Gläser, Phys. Rev. Letters 25, 1611 (1970)
H.G. Smith and W. Gläser, Phys. Rev. Letters 29, 353 (1972).
K. Schwarz, J. Phys.C8, 809 (1975);
A. Neckel, P. Rastl, R. Eibler, P. Weinberger and K. Schwarz, J. Phys.C9, 579 (1976).
L. Ramqvist, B. Ekstig, E. Källne, E. Noreland and R. Manne, J.Chem. Phys.Solids 32, 149 (1971)
K. Schwarz and N. Rösch, J. Phys. F6, L433 (1976)
W. Hanke, J. Hafner and H. Bilz, Phys.Rev.Lett. 37, 1560 (1976)
W. Hanke, Phys. Rev. B8, 4585, 4591 (1973)
L.J. Sham, Phys. Rev. B6, 3581 (1972)
R. Pick, Phonons (Flammarion, Paris, 1971), p.20.
S.K. Sinha, R.P. Gupta and D.L. Price, Phys. Rev. B9, 2564 (1974).
M. Gupta and A.J. Freeman, Phys.Rev.Lett. 37, 364 (1976).
B.M. Klein, D.A. Papaconstantopoulos and L.L. Boyer, Sol. State Comm. 20, 937 (1976)
R.P. Gupta and A.J. Freeman, Phys.Rev. B13, 4316 (1976).
W. Hanke and H. Bilz, In Proc. of the Int.Conf.on Inelastic Scattering of Neutrons (IAEA Vienna, 1971).
H. Fröhlich, Phys.Lett. A26, 169 (1968);
B.N. Ganguly and R.F. Woods, Phys.Rev. Lett. 28, 681 (1972)
S.K. Sinha and B.N. Harmon, Phys.Rev.Lett. 35, 1515 (1975)
W. Hanke, J. Hafner and H. Bilz, in Proc. of the Int.Conf. on Low-Lying Vibrational Modes and their Relation to Superconductivity and Ferroelectricity, Puerto Rico 1975 (in print).
J. Bar-Sagi and W. Hanke, in Proc. of the Int.Conf. on Low-Lying Vibrational Modes and their Relation to Superconductivity and Ferroelectricity, Puerto Rico 1975 (in print).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1977 Plenum Press, New York
About this chapter
Cite this chapter
Hafner, J., Hanke, W., Bilz, H. (1977). p-d Hybridization, Incipient Lattice Instabilities and Superconductivity in Transition Metal Compounds. In: Riste, T. (eds) Electron-Phonon Interactions and Phase Transitions. NATO Advanced Study Institutes Series, vol 29. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-8921-1_13
Download citation
DOI: https://doi.org/10.1007/978-1-4615-8921-1_13
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4615-8923-5
Online ISBN: 978-1-4615-8921-1
eBook Packages: Springer Book Archive