منابع مشابه
The 2-Channel Kondo Model II: CFT Calculation of Non-Equilibrium Conductance through a Nanoconstriction containing 2-Channel Kondo Impurities
Recent experiments by Ralph and Buhrman on zero-bias anomalies in quenched Cu nanoconstrictions (reviewed in the preceding paper, I), are in accord with the assumption that the interaction between electrons and nearly degenerate two-level systems in the constriction can be described, for sufficiently small voltages and temperatures (V, T < TK), by the 2-channel Kondo (2CK) model. Motivated by t...
متن کاملOn two channel flavor anisotropic Kondo model
Using Abelian Bosonization and Conformal Field Theory, we reinvestigate the two channel flavor anisotropic Kondo model where the two conduction electron channels couple to the impurity spin with different strength. All the possible fixed points of this model have been identified. It is shown that there is only one non-fermi liquid fixed point which is the two channel Kondo fixed point. The syst...
متن کاملThe generalized multi-channel Kondo model: Thermodynamics and fusion equations
The SU(N) generalization of the multi-channel Kondo model with arbitrary rectangular impurity representations is considered by means of the Bethe Ansatz. The thermodynamics of the model is analyzed by introducing modified fusion equations for the impurity, leading to a simple description of the different IR fixed points of the theory. The entropy at zero temperature is discussed; in particular ...
متن کاملThe 2-Channel Kondo Model I: Review of Experimental Evidence for its Realization in Metal Nanoconstrictions
Certain zero-bias anomalies (ZBAs) in the voltage, temperature and magnetic field dependence of the conductance G(V, T,H) of quenched Cu point contacts have previously been interpreted to be due to non-magnetic 2-channel Kondo (2CK) scattering from near-degenerate atomic two-level tunneling systems1,2, and hence to represent an experimental realization of the non-Fermi-liquid physics of the T =...
متن کاملSolution of two channel spin - flavor Kondo model
We investigate a model where an impurity couples to both the spin and the flavor currents of the two channel conduction electrons. This model can be used as a prototype model of a magnetic impurity tunneling between two sites in a metal and of some heavy fermion systems where the ground state of the impurity has a fourfold degeneracy. The system is shown to flow to a doubly degenerate non fermi...
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ژورنال
عنوان ژورنال: Annals of Physics
سال: 1998
ISSN: 0003-4916
DOI: 10.1006/aphy.1997.5750