TY - JOUR
T1 - Strongly inhomogeneous phases and non-Fermi-liquid behavior in randomly depleted Kondo lattices
AU - Kaul, Ribhu K.
AU - Vojta, Matthias
PY - 2007/4/25
Y1 - 2007/4/25
N2 - We investigate the low-temperature behavior of paramagnetic Kondo lattices upon random depletion of the local f moments by using strong-coupling arguments and solving SU (N) saddle-point equations on large lattices. For a large range of intermediate doping levels, between the coherent Fermi-liquid of the dense lattice and the single-impurity Fermi liquid of the dilute limit, we find strongly inhomogeneous states that exhibit distinct non-Fermi-liquid characteristics. The interplay of dopant disorder and strong interactions leads to rare weakly screened moments which dominate the bulk susceptibility. Our results are relevant to compounds like Cex La1-x Co In5 and Cex La1-x Pb3.
AB - We investigate the low-temperature behavior of paramagnetic Kondo lattices upon random depletion of the local f moments by using strong-coupling arguments and solving SU (N) saddle-point equations on large lattices. For a large range of intermediate doping levels, between the coherent Fermi-liquid of the dense lattice and the single-impurity Fermi liquid of the dilute limit, we find strongly inhomogeneous states that exhibit distinct non-Fermi-liquid characteristics. The interplay of dopant disorder and strong interactions leads to rare weakly screened moments which dominate the bulk susceptibility. Our results are relevant to compounds like Cex La1-x Co In5 and Cex La1-x Pb3.
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U2 - 10.1103/PhysRevB.75.132407
DO - 10.1103/PhysRevB.75.132407
M3 - Article
AN - SCOPUS:34247513121
SN - 1098-0121
VL - 75
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 13
M1 - 132407
ER -