Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1998-06-30
Physics
Condensed Matter
Strongly Correlated Electrons
23 pages plus 13 Postscript figures, revtex, to appear in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.58.6992
We studied the effects of hole doping on spin correlations in the periodic Anderson model, mainly at the full and three-quarters-full lower bands cases. In the full lower band case, strong anti-ferromagnetic correlations develop when the on-site repulsive interaction strength $U$ becomes comparable to the quasi-particle band width. In the three-quarters full case, a novel kind of spin correlation develops that is consistent with the resonance between a $(\pi,0)$ and a $(0,\pi)$ spin-density wave. In this state the spins on different sublattices appear uncorrelated. Hole doping away from the completely full case rapidly destroys the long-range anti-ferromagnetic correlations, in a manner reminiscent of the destruction of anti-ferromagnetism in the Hubbard model. In contrast to the Hubbard model, the doping does not shift the peak in the magnetic structure factor from the $(\pi,\pi)$ position. At dopings intermediate to the full and three-quarters full cases, only weak spin correlations exist.
Bonča Janez
Gubernatis James E.
No associations
LandOfFree
Effects of doping on spin correlations in the periodic Anderson model 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 Effects of doping on spin correlations in the periodic Anderson model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of doping on spin correlations in the periodic Anderson model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-70872