Singular dynamics of underscreened magnetic impurity models
نویسندگان
چکیده
منابع مشابه
Dynamics of a tunneling magnetic impurity: Kondo effect induced incoherence.
We study how the formation of the Kondo compensation cloud influences the dynamical properties of a magnetic impurity that tunnels between two positions in a metal. The Kondo effect dynamically generates a strong tunneling impurity-conduction electron coupling, changes the temperature dependence of the tunneling rate, and may ultimately result in the destruction of the coherent motion of the pa...
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The effect of a polarized conduction-electron cloud back on a magnetic impurity dissolved in a metal is studied. It is shown that at a temperature Tc much higher than the Kondo temperature the system becomes unstable against symmetry breaking and that a state with 〈Sz〉 6 = 0 is established. The behaviour of 〈Sz〉 is derived for all temperatures and magnetic fields except for a very narrow region...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2005
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.72.045117