Variational Mote Carlo Study of Flat Band Ferromagnetism -- Application to CeRh_3 B_2

Details Variational Mote Carlo Study of Flat Band Ferromagnetism -- Application to CeRh_3 B_2 Variational Mote Carlo Study of Flat Band Ferromagnetism -- Application to CeRh_3 B_2

2006-06-06

arxiv.org/abs/cond-mat/0606143v1

Physics

Condensed Matter

Strongly Correlated Electrons

to be published in J.Phys.Soc.Jpn

Scientific paper

10.1143/JPSJ.75.084706

A new mechanism for ferromagnetism in CeRh_3B_2 is proposed on the basis of variational Monte Carlo results. In a one-dimensional Anderson lattice where each 4f electron hybridizes with a ligand orbital between neighboring Ce sites, ferromagnetism is stabilized due to a nearly flat band which is a mixture of conduction and 4f electron states. Because of the strong spin-orbit interaction in 4f electron states, and of considerable amount of hybridization in the nearly flat band, the magnetic moments from 4f and conduction electrons tend to cancel each other. The resultant ferromagnetic moment becomes smaller as compared with the local 4f moment, and the Fermi surface in the ferromagnetic ground state is hardly affected by the presence of 4f electrons. These theoretical results are consistent with experimental observations in CeRh_3B_2 by neutron scattering and dHvA effects.

Affiliated with

Also associated with

No associations

Rating

Variational Mote Carlo Study of Flat Band Ferromagnetism -- Application to CeRh_3 B_2 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 Variational Mote Carlo Study of Flat Band Ferromagnetism -- Application to CeRh_3 B_2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variational Mote Carlo Study of Flat Band Ferromagnetism -- Application to CeRh_3 B_2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-2985