CeRuPO: A rare example of a Ferromagnetic Kondo lattice

Abstract

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.

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

References in corpus (6)

• Heavy-fermion superconductivity in CeCoIn5 at 2.3K
• Theory of the thermoelectricity of intermetallic compounds with Ce or Yb ions
• Quantum Criticality in doped CePd_1-xRh_x Ferromagnet
• Nature of the Quantum Phase Transition in Clean, Itinerant Heisenberg Ferromagnets
• Probing the phase diagram of CeRu_2Ge_2 by thermopower at high pressure
• Suppression of ferromagnetism in CeSi_1.81 under temperature and pressure

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