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Volumn 66, Issue 2, 1991, Pages 209-211

Thickness dependence of the Kondo effect in AuFe films

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0001464183 PISSN: 00319007 EISSN: None Source Type: Journal
DOI: 10.1103/PhysRevLett.66.209 Document Type: Article

Times cited : (76)

References (15)

1
- 0005336130
- edited by, G. Höhler, Springer-Verlag, Berlin
- (1970) Springer Tracts in Modern Physics , vol.54 , pp. 1
- Fischer, K.¹

4
- 84927417824
- References 2 and 3 give interesting discussions of the Kondo screening cloud.

12
- 0041053604
- It has been pointed out to us that the magnitude of RK can be obtained by considering two electrons near the Fermi level, with energies which differ by kBTK. Then, RK is the distance such electrons can travel (ballistically) before they become out of phase with each other. When the elastic mean free path l is short, the motion is diffusive, and this ``dephasing'' length becomes app ( RKl )1/2. In our case l is typically 1000 Å, which leads to a dephasing length of order 5000 Å, which is much closer to the observed value (Fig. 1) than the theoretical estimate of RK, which is 3 μ m. However, it is not clear to us that this is the appropriate length scale for our problem, since, as has become clear from work on weak localization [see, for example, and also Ref. 9], elastic scattering does not necessarily destroy the important phase relationships.
- (1984) Phys. Rep. , vol.107 , pp. 1
- Bergmann, G.¹

13
- 84927417822
- However, since the coefficient B in Fig. 1 (and in the results for other sample batches) varies substantially for samples with rather large thicknesses, for which l is nearly constant, we do not believe that the variation of l with thickness is primarily responsible for our results.

15
- 84927417821
- Calculations of the effect of finite film thickness on the simple Kondo logarithm (1) do not predict a variation of B large enough to explain our results [G. Santoro, G. F. Guiliani, and P. F. Muzikar (private communication)].

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