Dilute Nd in simple cubic LaB6 shows electrical resistance and specific heat features at low temperature consistent with a Kondo scale of TK≲ 0.3 K. Nd has a well localized {\it 4f}3 {\it J} = 9/2 Hund's Rule configuration which is not anticipated to be Kondo coupled to the conduction electrons in LaB6. We conjecture that the unexpected Kondo effect arises via participation of {\it 4f} quadrupolar degrees of freedom of the Nd crystal field ground state quartet.
@article{arxiv.1206.4817,
title = {Kondo Physics in a Rare Earth Ion with Well Localized 4f Electrons},
author = {Jolanta Stankiewicz and Marco Evangelisti and Zachary Fisk and Pedro Schlottmann and Lev P. Gor'kov},
journal= {arXiv preprint arXiv:1206.4817},
year = {2012}
}