tunneling centers
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scholarly journals Kondo Temperature for the Two-Channel Kondo Models of Tunneling Centers

2001 ◽  
Vol 86 (12) ◽  
pp. 2629-2632 ◽  
Author(s):  
I. L. Aleiner ◽  
B. L. Altshuler ◽  
Y. M. Galperin ◽  
T. A. Shutenko
Keyword(s):  
Kondo Temperature ◽  
Tunneling Centers

scholarly journals Instability of the marginal commutative model of tunneling centers interacting with a metallic environment: Role of the electron-hole symmetry breaking

1997 ◽  
Vol 56 (20) ◽  
pp. 12947-12960 ◽  
Author(s):  
A. Zawadowski ◽  
G. Zaránd ◽  
P. Nozières ◽  
K. Vladár ◽  
G. T. Zimányi
Keyword(s):  
Symmetry Breaking ◽  
Electron Hole ◽  
Tunneling Centers

scholarly journals Orbital Kondo-Effect From Tunneling Impurities

1997 ◽  
Vol 11 (24) ◽  
pp. 2855-2899 ◽  
Author(s):  
G. Zaránd ◽  
K. Vladár
Keyword(s):  
Renormalization Group ◽  
Fermi Liquid ◽  
Kondo Effect ◽  
Experimental Situation ◽  
Low Energy ◽  
Liquid Behavior ◽  
Tunneling Centers ◽  
Energy Physics ◽  
Fermi Liquid Behavior

The article reviews recent results for the low energy physics of fast tunneling centers in metallic environments. For strong enough couplings to the environment these tunneling centers display an orbital Kondo effect and give rise to a non-Fermi-liquid behavior. This latter property is explained by establishing a mapping of the tunneling center model to the multichannel Kondo model via the renormalization group transformation combined with a 1/Nf expansion. The case of M-state systems, the role of the splittings and the present experimental situation are also discussed.

scholarly journals Dynamics of tunneling centers in metallic systems

1995 ◽  
Vol 52 (11) ◽  
pp. 7976-7981 ◽  
Author(s):  
Tabish Qureshi
Keyword(s):  
Tunneling Centers ◽  
Metallic Systems
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