We present realistic Kondo-lattice simulation results for the recently-discovered heavy-fermion antiferromagnet CePt2In7 comparing with its three-dimensional counterpart CeIn3 and the less two-dimensional ones, Ce-115’s. We find that the distance to the magnetic quantum critical point is the largest for CeIn3 and the smallest for Ce-115’s, and CePt2In7 falls in between. We argue that thetrend in quasi-two-dimensional materials stems from the frequency dependence of the hybridization between Cerium 4f-electrons and the conduction bands.
Revised: January 7, 2011 |
Published: April 30, 2010
Citation
Matsumoto M., M.J. Han, J. Otsuki, and S.Y. Savrasov. 2010.Magnetic quantum critical point and dimensionality trend in cerium-based heavy-fermion compounds.Physical Review. B, Condensed Matter 82, no. 18:180515(R). doi:10.1103/PhysRevB.82.180515