Dynamics of disordered heavy Fermion systems

Abstract

Dynamics of the disordered heavy Fermion model of Dobrosavljevic et al. are calculated using an expression for the spectral function of the Anderson model which is consistent with quantum Monte Carlo results. We compute the self-energy for three distributions of Kondo scales including the distribution of Bernal et al. for UCu{5-x}Pd{x}. The corresponding low temperature optical conductivity shows a low-frequency pseudogap, a negative optical mass enhancement, and a linear in frequency transport scattering rate, consistent with results in Y{1-x}U{x}Pd{3} and UCu{5-x}Pd{x}.

5 pages, LaTeX and 4 PS figures

References in corpus (5)

• Disorder-driven non-Fermi liquid behavior in Kondo alloys
• Kondo disorder: a possible route towards non-Fermi liquid behavior
• Magneto-Resistance in the Two-Channel Anderson Lattice
• Non Fermi Liquid Dynamics of the Two-Channel Kondo Lattice
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Cited by in corpus (10)

• Disorder-Driven Non-Fermi Liquid Behavior of Correlated Electrons
• Localization-induced Griffiths phase of disordered Anderson lattices
• On the scaling spectrum of the Anderson impurity model
• A Raman study of the temperature and magnetic field dependence of electronic and lattice properties in MnSi
• Influence of disorder on the transport properties of heavy-fermion systems
• Localization effects and inelastic scattering in disordered heavy electrons
• Charged pion production in $\mathbf{Au}+\mathbf{Au}$ collisions at $\sqrt{{\mathbf{s}}_{\mathbf{NN}}}$ = 2.4$\mathbf{GeV}$
• Finite temperature dynamics of the Anderson model
• Griffiths phase of the Kondo insulator fixed point
• Emergence of non-Fermi liquid dynamics through non-local correlations in an interacting disordered system