Nature of heavy-fermion states arising in the vicinity of an isolated cerium or holmium magnetic impurity in LaB6
NE Sluchanko, MA Anisimov, AV Bogach, VV Voronov… - JETP Letters, 2015 - Springer
NE Sluchanko, MA Anisimov, AV Bogach, VV Voronov, SY Gavrilkin, VV Glushkov…
JETP Letters, 2015•SpringerThe behavior of the electrical resistivity and magnetoresistance of lanthanum hexaboride
with isolated (∼ 1%) Ce or Ho magnetic impurities has been studied. It has been shown that
the low-temperature growth of the resistivity is characteristic of the weak localization regime
for charge carriers rather than of the Kondo effect. The negative magnetoresistance
observed in Ce x La 1− x B 6 and Ho x La 1− x B 6 at liquid helium temperatures also cannot
be interpreted in terms of the Kondo model and corresponds to the formation of many-body …
with isolated (∼ 1%) Ce or Ho magnetic impurities has been studied. It has been shown that
the low-temperature growth of the resistivity is characteristic of the weak localization regime
for charge carriers rather than of the Kondo effect. The negative magnetoresistance
observed in Ce x La 1− x B 6 and Ho x La 1− x B 6 at liquid helium temperatures also cannot
be interpreted in terms of the Kondo model and corresponds to the formation of many-body …
Abstract
The behavior of the electrical resistivity and magnetoresistance of lanthanum hexaboride with isolated (∼1%) Ce or Ho magnetic impurities has been studied. It has been shown that the low-temperature growth of the resistivity is characteristic of the weak localization regime for charge carriers rather than of the Kondo effect. The negative magnetoresistance observed in Ce x La1 − x B6 and Ho x La1 − x B6 at liquid helium temperatures also cannot be interpreted in terms of the Kondo model and corresponds to the formation of many-body states of a spin-polaron type near magnetic rare-earth ions in LaB6.
Springer
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