The Crystal Field Potential of PrOs4Sb12: Consequences for Superconductivity

Abstract

The results of inelastic neutron scattering provide a solution for the crystal field level scheme in PrOs4Sb12 in which the ground state in the cubic crystal field potential of Th symmetry is a Gamma_1 singlet. The conduction electron mass enhancement is consistent with inelastic exchange scattering, and we propose that inelastic quadrupolar, or aspherical Coulomb, scattering is responsible for enhancing the superconducting transition temperature. PrOs4Sb12 appears to be the first compound in which aspherical Coulomb scattering is strong enough to overcome magnetic pair-breaking and increase Tc.

4 pages, 2 figures

References in corpus (5)

• Anomalous heavy-fermion and ordered states in the filled skutterudite PrFe4P12
• Low temperature specific heat of the heavy fermion superconductor PrOs${}_4$Sb${}_{12}$
• Fermi surface of the heavy fermion superconductor PrOs${}_4$Sb${}_{12}$
• Exotic Heavy Fermion State in the Filled Skutterudite PrFe${}_4$P${}_{12}$ Uncovered by the de Haas-van Alphen Effect
• High magnetic field phase diagram of PrOs4Sb12

Cited by in corpus (47)

• Superconducting phases of f-electron compounds
• Exotic Heavy-Fermion State in Filled Skutterudite SmOs4Sb12
• Time-dependent Density-Matrix Renormalization-Group Methods
• Multiband superconductivity in the heavy fermion compound PrOs4Sb12
• Direct Observation of Quadrupolar Excitons in the Heavy-Fermion Superconductor PrOs${}_4$Sb${}_{12}$
• Theory of Crystalline Electric Field and Kondo Effect in Pr Skutterudites
• Multiband Superconductivity in Filled-Skutterudite Compounds (Pr_{1-x}La_{x})Os_{4}Sb_{12}: An Sb Nuclear-Quadruple-Resonance (NQR) Study
• Transport properties of the heavy fermion superconductor PrOs${}_4$Sb${}_{12}$
• Valence fluctuation in Ce${}_2$Co${}_3$Ge${}_5$ and crystal field effect in Pr${}_2$Co${}_3$Ge${}_5$
• Evolution of crystalline electric field effects, superconductivity, and heavy fermion behavior in the specific heat of Pr(Os${}_{1-x}$Ru${}_x$)${}_4$Sb${}_{12}$
• Magnetic order in Pr2Pd3Ge5 and possible heavy fermion behavior in Pr2Rh3Ge5
• Novel Phase Transition Near the Quantum Critical Point in the Filled-Skutterudite Compound CeOs4Sb12: an Sb-NQR Study
• Superconducting properties of Pr-based Filled skutterudite PrRu${}_4$As${}_{12}$
• Double superconducting transition in the filled skutterudite PrOs4Sb12 and sample characterizations
• Realization of Heavy Local Fermi Liquid and Non-Fermi Liquid in f${}^2$ Crystalline-Electric-Field Singlet-Triplet Configuration
• Eliashberg theory of superconductivity and inelastic rare-earth impurity scattering in filled skutterudite La${}_{1-x}$Pr${}_x$Os${}_4$Sb${}_{12}$
• Muon spin relaxation and hyperfine-enhanced 141Pr nuclear spin dynamic in Pr(Os,Ru)4Sb12 and (Pr,La)Os4Sb12
• Penetration depth, multiband superconductivity, and absence of muon-induced perturbation in superconducting PrOs${}_4$Sb${}_{12}$
• Sb-NQR probe for multipole degree of freedom in the first Pr-based heavy-fermion superconductor PrOs${}_4$Sb${}_{12}$
• Heavy fermion behavior in PrRh2B2C: Excitonic mass enhancement
• Dynamics of the Singlet-Triplet System Coupled with Conduction Spins -- Application to Pr Skutterudites
• Evolution of superconducting order in Pr(Os${}_{1-x}$Ru${}_x$)${}_4$Sb${}_{12}$
• Multipole Susceptibility of Multiorbital Anderson Model Coupled with Jahn-Teller Phonons
• Multipole State of Heavy Lanthanide Filled Skutterudites
• Magnetic and transport properties of Pr2Pt3Si5
• Pr-magnetism in the quasi-skutterudite compound PrFe${}_2$Al${}_8$
• Exciton Mediated Triplet Superconductivity in Th System PrOs4Sb12
• Investigations of the singlet ground state system: PrIrSi3
• 123Sb-NQR study of unconventional superconductivity in the filled skutterudite heavy-fermion compound PrOs4Sb12 under high pressure up to P = 3.82 GPa
• Field dependent mass enhancement in Pr_{1-x}La_xOs_4Sb_12 from aspherical Coulomb scattering
• Hybridization and multipole orders of 4f electrons in Pr skutterudites
• Superconductivity, magnetic order, and quadrupolar order in the filled skutterudite system Pr${}_{1-x}$Nd${}_x$Os${}_4$Sb${}_{12}$
• Penetration depth study of LaOs${}_4$Sb${}_{12}$: Multiband s-wave superconductivity
• Microscopic Aspects of Multipole Properties of Filled Skutterudites
• Magnetoresistance of Pr${}_{1-x}$La${}_x$Os${}_4$Sb${}_{12}$: Disentangling local crystalline-electric-field physics and lattice effects
• Nonadiabatic effects of rattling phonons and 4f excitations in Pr(Os{1-x}Ru{x})4Sb12
• Distinct Kondo Screening Behaviors in Heavy Fermion Filled Skutterudites with 4f1 and 4f2 Configurations
• Direct determination of the crystal field parameters of Dy, Er and Yb impurities in the skutterudite compound CeFe${}_4$P${}_{12}$ by Electron Spin Resonance
• Inelastic neutron scattering study of crystalline electric field excitations in the caged compounds NdT2Zn20 (T = Co, Rh, and Ir)
• Multipole as $f$-Electron Spin-Charge Density in Filled Skutterudites
• Muon spin rotation and relaxation in Pr${}_{1-x}$Nd${}_x$Os${}_4$Sb${}_{12}$: Paramagnetic states
• Orbital order and Hund's rule frustration in Kondo lattices
• Quadrupole Susceptibility of Gd-Based Filled Skutterudite Compounds
• Inelastic neutron scattering studies of Crystal Field Levels in PrOs${}_4$As${}_{12}$
• Construction of a Microscopic Model for Yb and Tm Compounds on the Basis of a $\mib{j}$-$\mib{j}$ Coupling Scheme
• Controlled pairing symmetry of the superfluid state in systems of three-component repulsive fermionic atoms in optical lattices
• Point-contact spectroscopy of the normal state excitations in PrOs4Sb12