Abstract
We discuss Kondo effect for a general model, describing a quantum impurity with degenerate energy levels, interacting with a gas of itinerant electrons, and derive scaling equation to the second order for such a model. We show how the scaling equation for the spin-anisotropic Kondo model with the power law density of states (DOS) for itinerant electrons follows from the general scaling equation. We introduce the anisotropic Coqblin–Schrieffer model, apply the general method to derive scaling equation for that model for the power law DOS, and integrate the derived equation analytically.
| Original language | English |
|---|---|
| Article number | 085001 |
| Journal | Journal of Physics Communications |
| Volume | 2 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 2018 |
Bibliographical note
Publisher Copyright:© 2018 The Author(s).
Funding
The research leading to the results presented here was started during the author’s visit to Max-Planck-Institut fur Physik komplexer Systeme, Dresden, continued during the author’s visit to DIPC, San Sebastian/Donostia, and finalized during the author’s visits to Keio University, Yokohama and National Cheng Kung University, Tainan. The author cordially thanks all the Institutions for the hospitality extended to him during those and all his previous visits.
| Funders | Funder number |
|---|---|
| Keio University, Yokohama and National Cheng Kung University |
Keywords
- Coqblin
- Gas of itinerant electrons
- Schrieffer models
- Spin-anisotropic Kondo