Phase Diagram of the Two-Channel Kondo Lattice
Mark Jarrell, Hanbin Pang, and D.L. Cox
TL;DR
This paper explores the phase diagram of the two-channel Kondo lattice using Quantum Monte Carlo simulations, revealing weak antiferromagnetic and discontinuous superconducting transitions with odd-frequency pairing.
Contribution
It provides the first detailed phase diagram of the two-channel Kondo lattice in infinite dimensions using Quantum Monte Carlo methods.
Findings
Weak, continuous antiferromagnetic transition.
Discontinuous superconducting transition with odd-frequency pairing.
Identification of multiple ordered states.
Abstract
The phase diagram of the two-channel Kondo lattice model is examined with a Quantum Monte Carlo simulation in the limit of infinite dimensions. Commensurate (and incommensurate) antiferromagnetic and superconducting states are found. The antiferromagnetic transition is very weak and continuous; whereas the superconducting transition is discontinuous to an odd-frequency channel-singlet and spin-singlet pairing state.
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