Independent freezing of charge and spin dynamics in La1.5Sr0.5CoO4

Details Independent freezing of charge and spin dynamics in La1.5Sr0.5CoO4 Independent freezing of charge and spin dynamics in La1.5Sr0.5CoO4

2000-06-07

arxiv.org/abs/cond-mat/0006115v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures, Latex. Submitted to PRL

Scientific paper

10.1103/PhysRevLett.85.4353

We present elastic and quasielastic neutron scattering measurements characterizing peculiar short-range charge-orbital and spin order in the layered perovskite material La1.5Sr0.5CoO4. We find that below Tc~750 K holes introduced by Sr doping lose mobility and enter a statically ordered {\it charge glass} phase with loosely correlated checkerboard arrangement of empty and occupied d{3z2-r2} orbitals (Co3+ and Co2+). The dynamics of the resultant mixed spin system is governed by the anisotropic nature of the crystal-field Hamiltonian and the peculiar exchange pattern produced by the orbital order. It undergoes a {\it spin freezing} transition at much a lower temperature, Ts~30 K.

Affiliated with

Also associated with

No associations

Rating

Independent freezing of charge and spin dynamics in La1.5Sr0.5CoO4 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 Independent freezing of charge and spin dynamics in La1.5Sr0.5CoO4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Independent freezing of charge and spin dynamics in La1.5Sr0.5CoO4 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-290148