Two-Channel Kondo Lattice: An Incoherent Metal
Mark Jarrell (1), Hanbin Pang (1), D.L. Cox (2,3), K.H. Luk (4) ((1), University of Cincinnati, (2) The Ohio State University, (3) ITP, UC Santa, Barbara, (4) The Hong Kong Univeristy of Science, Technology)
TL;DR
This study uses Quantum Monte Carlo simulations to analyze the two-channel Kondo lattice, revealing non-Fermi-liquid behavior and incoherent metallic properties at low temperatures relevant to heavy fermion metals.
Contribution
First simulation of the two-channel Kondo lattice in infinite dimensions showing non-Fermi-liquid incoherent metallic behavior.
Findings
Finite low-temperature single-particle scattering rate
Absence of a Fermi edge and Drude weight
Finite low-energy electronic density of states
Abstract
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, the lack of a fermi edge and Drude weight. However, the low-energy density of electronic states is finite. Thus, we identify this system as an incoherent metal. We discuss the relevance of our results for concentrated heavy fermion metals with non-Fermi-Liquid behavior.
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