An extended Anderson model that shows decreasing resistivity with decreasing temperature

Solid State Communications

Volumn 104, Issue 7, 1997, Pages 429-433

  Suzuki, S ^a   Sakai, O ^a   Shimizu, Y ^a  

^a TOHOKU UNIVERSITY   (Japan)

Author keywords

D. electronic transport; D. heavy fermions; D. Kondo effects

Indexed keywords

ELECTRON ENERGY LEVELS; ELECTRON TRANSPORT PROPERTIES; MATHEMATICAL MODELS; THERMAL EFFECTS;

EXTENDED ANDERSON MODELS; HEAVY FERMIONS; KONDO EFFECTS;

ELECTRIC CONDUCTIVITY OF SOLIDS;

EID: 0031275474     PISSN: 00381098     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0038-1098(97)00291-3     Document Type: Article

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19. 8 electrons.
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23. The FTCAM is the Anderson model with four fold degeneracy that the usual Fermi liquid picture is applied. In this model, the channel excitation is equal to the magnetic excitation and its peak position is good approximation of the usual definition of the Kondo temperature, see [15].
24. The -ln T anomaly is also found in the spin susceptibility which is calculated directly by using the NRG. The numerical results will be published in the near future.
25. 3. The value at the unitarity limit of the dotted-dashed line is 2.6 μΩ-cm and that of the dotted line is 3.0 μΩ-cm.
26. When we consider a model adding the third extra channel, the resistivity of the low temperatures is expected to decrease more significantly because the phase shift of the third channel tends to zero in the low energy limit. (See Shimizu, Y., Sakai, O. and Suzuki, S., in Proceedings of ICM '97). This modified case will show the resistivity that is more similar to the experimental results.