Electronic structure of CePdAl experiment and calculations

CePdAl exhibits an antiferromagnetic phase below T-N = 2.7 K; its physical properties are typical of heavy fermion compounds (specific heat coefficient gamma = C/T = 270 mJ/(mol.K-2)). The triangular coordination symmetry of the magnetic Ce ions gives rise to geometrical frustration and leads to an incommensurate antiferromagnetic structure below T-N, showing a coexistence of ordered and frustrated Ce moments. The purpose of this work was to discuss electronic structure of CePdAl and its influence on the geometrical frustration in the Kagome-like lattice and the Kondo effect in CePdAl. We present the results of the X-ray diffraction analysis and the XPS Ce 3d core and valence band spectra. We also present the spin-polarized band structure calculations for CePdAl, using the LAPW method.