Magnetic frustration, which is well-defined in insulating systems with localized magnetic moments, yields exotic ground states like spin ices, spin glasses, or spin liquids. In metals magnetic frustration is less well defined because of the incipient delocalization of magnetic moments by the interaction with conduction electrons, viz., the Kondo effect. Hence, the Kondo effect and magnetic frustration are antithetic phenomena. Here we present experimental data of electrical resistivity, magnetization, specific heat and neutron diffraction on CePdAl, which is one of the rare examples of a geometrically frustrated Kondo lattice, demonstrating that the combination of Kondo effect and magnetic frustration leads to an unusual ground state.
@article{arxiv.1609.01551,
title = {CePdAl - a Kondo lattice with partial frustration},
author = {Veronika Fritsch and Stefan Lucas and Zita Huesges and Akito Sakai and Wolfram Kittler and Christian Taubenheim and Sarah Woitschach and Bjørn Pedersen and Kai Grube and Burkhard Schmidt and Philipp Gegenwart and Oliver Stockert and Hilbert v. Löhneysen},
journal= {arXiv preprint arXiv:1609.01551},
year = {2017}
}