Abstract

A theoretical approach is generalized and employed to calculate themagneto-resistivity of a rare-earth crystalline (CeAl2) withdegenerate ground crystal-field (CF) level in the presence of externalfields. The calculated results show that when a magnetic field isapplied in the c-direction, the magneto-resistivity may be reduced bymore than 90% in certain cases in comparison with the pure CFcontribution at the same temperature, demonstrating the strong effectsof the degeneracy removals of the CF levels on the magnetic resistivity.

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