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  Kondo anomalies of heat conductivity and Lorenz ratio in normal state (La, Ce) Al2

Moeser, J. H., & Steglich, F. (1975). Kondo anomalies of heat conductivity and Lorenz ratio in normal state (La, Ce) Al2. Zeitschrift für Physik B, 21(2), 165-170. doi:10.1007/BF01322247.

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 Creators:
Moeser, J. H.1, Author
Steglich, F.2, Author              
Affiliations:
1external, ou_persistent22              
2External Organizations, ou_persistent22              

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 Abstract: The thermal conductivity of LaAl2 and of two dilute (La, Ce)Al2 alloys was measured in the normal state between 0.4 and 8 K. From the lattice conductivity of LaAl2 a high dislocation densityN d caused by the arc melting process can be inferred. After annealingN d is reduced by an order of magnitude. For the (La, Ce)Al2 samples minima are observed at 5 K in theW e ·T vs.T curves (W e =electronic thermal resistivity). Below 1 K the quantityW e ·T is linear in (— lnT). The electronic Lorenz ratioL e (T)=ρ(T)/W e (T) ·T shows a maximum at 2 K with a value 23% aboveL e (0). It is for the first time that this Kondo anomaly is established in its full temperature dependence.

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 Dates: 1975-09-08
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: ISI: A1975AH15300008
DOI: 10.1007/BF01322247
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Title: Zeitschrift für Physik B
  Other : Zeitschrift für Physik B Condensed Matter
Source Genre: Journal
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Publ. Info: Springer-Verlag
Pages: - Volume / Issue: 21 (2) Sequence Number: - Start / End Page: 165 - 170 Identifier: CoNE: https://pure.mpg.de/cone/journals/resource/0722-3277