Phys. Rev. Lett. 69, 2594–2597 (1992)Study of the two-impurity, two-channel Kondo HamiltonianReceived 3 August 1992; published in the issue dated 26 October 1992 The two-channel Kondo Hamiltonian has recently been proposed as a description of several experimental systems. Our numerical renormalization-group treatment of a pair of magnetic impurities shows that at low temperatures, interimpurity interactions destabilize the ‘‘marginal-Fermi-liquid’’ behavior predicted by a single-impurity model. We find four stable zero-temperature regimes, three of which can be described by Fermi-liquid theory. The fourth possesses a complex many-body ground state and non-Fermi-liquid properties which are expected to be governed by nonuniversal critical exponents. © 1992 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.69.2594
DOI:
10.1103/PhysRevLett.69.2594
PACS:
75.20.Hr, 75.30.Hx, 75.30.Mb
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.