Non Fermi Liquid Dynamics of the Two-Channel Kondo Lattice
M. Jarrell, Hanbin Pang, D.L. Cox, F. Anders, and A. Chattopadhyay
TL;DR
This paper investigates the non-Fermi-liquid behavior in the paramagnetic phase of the two-channel Kondo lattice using Quantum Monte Carlo simulations, revealing unconventional electronic properties at low temperatures.
Contribution
It provides the first detailed Quantum Monte Carlo analysis of the two-channel Kondo lattice in infinite dimensions, highlighting non-Fermi-liquid phenomena.
Findings
Finite low-temperature single-particle scattering rate
Absence of Fermi distribution discontinuity
Zero Drude weight indicating non-Fermi-liquid behavior
Abstract
The paramagnetic phase of the two-channel Kondo lattice model is examined with a Quantum Monte Carlo simulation in the limit of infinite dimensions. We find non-Fermi-liquid behavior at low temperatures including a finite low-temperature single-particle scattering rate, no Fermi distribution discontinuity, and zero Drude weight. Both the optical and quasiparticle mass enhancement and scattering relaxation rate show consistent evidence of non-fermi liquid behavior. However, the low-energy density of electronic states is finite.
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