A Model for the Schottky Anomaly in Metallic $Nd_{2-y}Ce_{y}CuO_{4}$

Details A Model for the Schottky Anomaly in Metallic $Nd_{2-y}Ce_{y}CuO_{4}$ A Model for the Schottky Anomaly in Metallic $Nd_{2-y}Ce_{y}CuO_{4}$

1998-07-25

arxiv.org/abs/cond-mat/9807337v2

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 5 figures, and 13 references

Scientific paper

10.1016/S0921-4534(98)00576-0

We present a simple model for the doped compound $Nd_{2-y}Ce_{y}CuO_{4}$, in order to explain some recent experimental results on the latter. Within a Hartree-Fock context, we start from an impurity Anderson-like model and consider the magnetic splitting of the $Nd$-$4f$ ground state Kramers doublet due to exchange interactions with the ordered $Cu$ moments. Our results are in very good agreement with the experimental data, yielding a Schottky anomaly peak for the specific heat that reduces its amplitude, broadens and shifts to lower temperatures, upon $Ce$ doping. For overdoped compounds at low temperatures, the specific heat behaves linearly and the magnetic susceptibility is constant. A smooth transition from this Fermi liquid like behavior ocurrs as temperature is increased and at high temperatures the susceptibility exhibits a Curie-like behavior. Finally, we discuss some improvements our model is amenable to incorporate.

Affiliated with

Also associated with

No associations

Rating

A Model for the Schottky Anomaly in Metallic $Nd_{2-y}Ce_{y}CuO_{4}$ does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A Model for the Schottky Anomaly in Metallic $Nd_{2-y}Ce_{y}CuO_{4}$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Model for the Schottky Anomaly in Metallic $Nd_{2-y}Ce_{y}CuO_{4}$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-130559