CeRuPO: A rare example of a Ferromagnetic Kondo lattice

Details CeRuPO: A rare example of a Ferromagnetic Kondo lattice CeRuPO: A rare example of a Ferromagnetic Kondo lattice

2007-04-17

arxiv.org/abs/0704.2170v2

Phys. Rev. B 76, 104418 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

accepted in Phys. Rev. B, high quality figures: http://www.cpfs.mpg.de/~krellner/

Scientific paper

10.1103/PhysRevB.76.104418

We have determined the physical ground state properties of the compounds CeRuPO and CeOsPO by means of magnetic susceptibility chi(T), specific heat C(T), electrical resistivity rho(T), and thermopower S(T) measurements. chi(T) reveals a trivalent 4f1 cerium state in both compounds. For CeRuPO a pronounced decrease of rho(T) below 50K indicates the onset of coherent Kondo scattering which is confirmed by enhanced S(T). The temperature and magnetic field dependence of chi(T) and C(T) evidence ferromagnetic (FM) order at TC=15K. Thus, CeRuPO seems to be one of the rare example of a FM Kondo lattice. In contrast, CeOsPO shows antiferromagnetic order at TN=4.4K despite only minor changes in lattice parameters and electronic configuration. Additional 31P NMR results support these scenarios. LSDA+U calculations evidence a quasi two dimensional electronic band structure, reflecting a strong covalent bonding within the CeO and RuP layers and a weak ionic like bonding between the layers.

Affiliated with

Also associated with

No associations

Rating

CeRuPO: A rare example of a Ferromagnetic Kondo lattice 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 CeRuPO: A rare example of a Ferromagnetic Kondo lattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CeRuPO: A rare example of a Ferromagnetic Kondo lattice will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-233920