Nandiniand, R. ; Kumar, N. (1974) Resistance minimum in dilute "magnetic" alloys in the absence of impurity moments Physica Status Solidi B, 63 (1). pp. 377-384. ISSN 0370-1972
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/pssb.22...
Related URL: http://dx.doi.org/10.1002/pssb.2220630138
Abstract
A possible mechanism for the resistance minimum in dilute alloys in which the localized impurity states are non-magnetic is suggested. The fact is considered that what is essential to the Kondo-like behaviour is the interaction of the conduction electron spin s with the internal dynamical degrees of freedom of the impurity centre. The necessary internal dynamical degrees of freedom are provided by the dynamical Jahn-Teller effect associated with the degenerate 3d-orbitals of the transition-metal impurities interacting with the surrounding (octahedral) complex of the nearest-neighbour atoms. The fictitious spin I characterizing certain low-lying vibronic states of the system is shown to couple with the conduction electron spin s via s-d mixing and spin-orbit coupling, giving rise to a singular temperature-dependent exchange-like interaction. The resistivity so calculated is in fair agreement with the experimental results of Cape and Hake for Ti containing 0.2 at% of Fe.
Item Type: | Article |
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Source: | Copyright of this article belongs to John Wiley and Sons. |
ID Code: | 85083 |
Deposited On: | 29 Feb 2012 12:06 |
Last Modified: | 29 Feb 2012 12:06 |
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