Thermodynamics of the anisotropic two-channel Kondo problem

Abstract

We construct and solve numerically the thermodynamic Bethe Ansatz equations for the spin-anisotropic two-channel Kondo model in arbitrary external field $h$. At high temperatures the specific heat and the susceptibility show power law dependence. For $h\to 0$ and at temperatures below the Kondo temperature $T_K$ a two-channel Kondo effect develops characterized by a Wilson ratio 8/3, and a logarithmic divergence of the susceptibility and the linear specific heat coefficient. Finite magnetic field, $h>0$ drives the system to a Fermi liquid fixed point with an unusual Wilson ratio which depends sensitively on $h$.

10 pages, 7 eps figures, REVTeX

Cited by in corpus (19)

• Numerical renormalization group study of two-channel three-impurity triangular clusters
• Two-channel Kondo physics in odd impurity chains
• Detection of Majorana edge states in topological superconductors through the non-Fermi-liquid effects induced in an interacting quantum dot
• Numerical Renormalization Group calculations of the magnetization of isotropic and anisotropic Kondo impurities
• Solution of the Multi-Channel Anderson Impurity Model: Ground state and thermodynamics
• Magnetic Field Effect on Crossover Temperature from Non-Fermi Liquid to Fermi Liquid Behavior in f^2-Impurity Systems with Crystalline-Electric-Field Singlet State Competing with Kondo-Yosida Singlet State
• Exact equilibrium results in the Interacting Resonant Level Model
• Orbital Kondo behavior from dynamical structural defects
• The Ohmic two-state system from the perspective of the interacting resonant level model: Thermodynamics and transient dynamics
• Poor man's scaling: anisotropic Kondo and Coqblin--Schrieffer models
• Measuring Luttinger Liquid Correlations from Charge Fluctuations in a Nanoscale Structure
• Bosonization approach to the mixed-valence two-channel Kondo problem
• The anisotropic multichannel spin-$S$ Kondo model: Calculation of scales from a novel exact solution
• Poor man's scaling and Lie algebras
• Order parameter for the multichannel Kondo model at quantum criticality
• Frustration shapes multi-channel Kondo physics: a star graph perspective
• Poor man's scaling: $XYZ$ Coqblin--Schrieffer model revisited
• Many-flavor electron gas approach to electron-hole drops
• Diffusion Monte Carlo study of a valley degenerate electron gas and application to quantum dots