title: Kondo physics in a rare earth ion with well localized 4f electrons.
abstract: Dilute Nd in simple cubic LaB(6) shows electrical resistance and specific heat features at low temperature consistent with a Kondo scale of T(K) </~ 0.3 K. Nd has a well-localized 4f(3) J = 9/2 Hund's rule configuration which is not anticipated to be Kondo coupled to the conduction electrons in LaB(6). We conjecture that the unexpected Kondo effect arises via participation of 4f quadrupolar degrees of freedom of the Nd crystal-field, ground-state quartet.
authors.affiliation: Instituto de Ciencia de Materiales de Aragón and Departamento de Física de la Materia Condensada, CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain. jolanta@unizar.es
authors.forename: Jolanta
authors.initials: J
authors.lastname: Stankiewicz
authors.forename: Marco
authors.initials: M
authors.lastname: Evangelisti
authors.forename: Zachary
authors.initials: Z
authors.lastname: Fisk
authors.forename: Pedro
authors.initials: P
authors.lastname: Schlottmann
authors.forename: Lev P
authors.initials: LP
authors.lastname: Gor'kov