CePdAl - a Kondo lattice with partial frustration

Abstract

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.

arXiv comment8 pages, 6 figures

References in corpus (4)

• Spin Ice State in Frustrated Magnetic Pyrochlore Materials
• Weak magnetism and non-Fermi liquids near heavy-fermion critical points
• Spin and orbital frustration in MnSc_2S_4 and FeSc_2S_4
• Approaching quantum criticality in a partially geometrically frustrated heavy-fermion metal

Cited by in corpus (9)

• Unconventional magnetism of the Kondo lattice
• Kondo destruction in a quantum paramagnet with magnetic frustration
• Semimetallic Kondo lattice behavior in YbPdAs with a distorted kagome structure
• Intermediate valence in single crystalline Yb${}_2$Si${}_2$Al
• Competing States in the Two-Dimensional Frustrated Kondo-Necklace Model
• Evolution of the partially frustrated magnetic order in CePd${}_{1-x}$Ni${}_x$Al
• Quantitative investigation of the 4$f$ occupation in the quasikagome Kondo lattice CeRh${}_{1-x}$Pd${}_x$Sn
• Microscopic evidence of a field-induced critical spin-liquid state in a frustrated metal
• Excess heat capacity in magnetically ordered Ce heavy fermion metals