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.

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

References in corpus (2)

• Probing the phase diagram of CeRu_2Ge_2 by thermopower at high pressure
• Suppression of ferromagnetism in CeSi_1.81 under temperature and pressure

Cited by in corpus (32)

• Superconductivity at 41 K and its competition with spin-density-wave instability in layered CeO${}_{1-x}$F${}_x$FeAs
• CeFePO: A Heavy Fermion Metal with Ferromagnetic Correlations
• Kondo resonance narrowing in d- and f-electron systems
• Relevance of ferromagnetic correlations for the Electron Spin Resonance in Kondo lattice systems
• Coexistence of superconductivity and ferromagnetism in Sr0.5Ce0.5FBiS2
• Single crystal growth and anisotropy of CeRuPO
• Avoided ferromagnetic quantum critical point in CeRuPO
• Coexistence of ferromagnetism and superconductivity in CeO${}_{0.3}$F${}_{0.7}$BiS${}_2$
• Kondo-lattice ferromagnets and their peculiar order along the magnetically hard axis
• Ferromagnetic Quantum Critical Point in Heavy-Fermion Iron Oxypnictide Ce(Ru${}_{1-x}$Fe${}_x$)PO
• Interplay between 3d and 4f magnetism in CeCoPO
• Electronic structure and Fermi surface character of LaONiP from first principles
• Unconventional magnetism of the Kondo lattice
• Quantum oscillations of the superconductor LaRu${}_2$P${}_2$ : comparable mass enhancement $\lambda \approx 1$ in Ru and Fe phosphides
• Complex magnetism and strong electronic correlations in Ce2PdGe3
• Magnetism of the Fe${}^{2+}$ and Ce${}^{3+}$ sublattices in Ce${}_2$O${}_2$FeSe${}_2$: a combined neutron powder diffraction, inelastic neutron scattering and density functional study
• Ferromagnetic Quantum Critical Point Induced by Tuning the Magnetic Dimensionality of the Heavy-Fermion Iron Oxypnictide Ce(Ru${}_{1-x}$Fe${}_x$)PO
• Ferromagnetic ordering along the hard axis in the Kondo lattice YbIr3Ge7
• Ferromagnetic behavior of the Kondo lattice compound $N{p}_{2}PtG{a}_3$
• Relaxing Kondo screened Kramers-doublets in CeRhSi${}_3$
• A Heavy-Fermion Zn-deficient CaBe2Ge2-Type Phase with Rare Ce-based Ferromagnetism and Large Magnetoresistance
• Tuning the anomalous Nernst and Hall effects with shifting the chemical potential in Fe-doped and Ni-doped Co${}_3$Sn${}_2$S${}_2$
• Ferromagnetic Kondo lattice behavior in Ce11Pd4In9
• Electron Spin Resonance of the ferromagnetic Kondo lattice CeRuPO
• Influence of Band and Orbital Degeneracies on Ferromagnetism in the Periodic Anderson Model
• Observation of Weak Kondo Effect and Angle Dependent Magnetoresistance in Layered Antiferromagnetic V${}_5$S${}_8$ Single Crystal
• Phase diagram of CeRuPO under pressure investigated by ${}^{31}$P-NMR - Comparison between CeRuPO under pressure and the Ce(Ru${}_{1-x}$Fe${}_x$)PO system -
• From localized 4f electrons to anisotropic exchange interactions in ferromagnetic CeRh6Ge4
• Importance of anisotropic interactions for hard-axis/plane ordering of Ce-based ferromagnets
• Effect of external pressure on the magnetic properties of $R$CoAsO ($R$ = La, Pr, Sm): a $\mu$SR study
• Synthesis and physical properties of Ce${}_2$Rh${}_{3+\delta }$Sb${}_4$ single crystals
• Influence of strain on the properties of CeRuPO and CeOsPO Kondo systems