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muSR in Ce_{1-x}La_xAl_3: anisotropic Kondo effect?

D. E. MacLaughlin·M. S. Rose·B. -L. Young·O. O. Bernal·R. H. Heffner·G. J. Nieuwenhuys·R. Pietri·B. Andraka
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Abstract

Zero-field muSR experiments in the heavy-fermion alloys Ce_{1-x}La_xAl_3, x = 0 and 0.2, examine a recent proposal that the system exhibits a strong anisotropic Kondo effect. We resolve a damped oscillatory component for both La concentrations, indicative of disordered antiferromagnetism. For x = 0.2 the oscillation frequency decreases smoothly with increasing temperature, and vanishes at the specific heat anomaly temperature T* \approx 2.2 K. Our results are consistent with the view that T* is due to a magnetic transition rather than anisotropic Kondo behavior.

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D. E. MacLaughlin, M. S. Rose, B. -L. Young, O. O. Bernal, R. H. Heffner, G. J. Nieuwenhuys, R. Pietri, B. Andraka. 2002-07-18. muSR in Ce_{1-x}La_xAl_3: anisotropic Kondo effect?. https://doi.org/10.1016/s0921-4526(02)01639-3

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