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 (formula presented) and at temperatures below the Kondo temperature (formula presented) a two-channel Kondo effect develops characterized by a Wilson ratio (formula presented) and a logarithmic divergence of the susceptibility and the linear specific-heat coefficient. A finite magnetic field, (formula presented) drives the system to a Fermi-liquid fixed point with an unusual Wilson ratio which depends sensitively on h.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1-9 |
| Number of pages | 9 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 65 |
| Issue number | 13 |
| DOIs | |
| State | Published - 2002 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics