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  Anomalous Behavious of the Kondo Superconductor (La1-xCex) Al2

Minnigerode, G. v., Armbrüster, H., Riblet, G., Steglich, F., & Winzer, K. (1974). Anomalous Behavious of the Kondo Superconductor (La1-xCex) Al2. Low Temperature Physics, LT13, 567-573. doi:10.1007/978-1-4613-4520-6_99.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-BF74-7 Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-BF86-0
Genre: Zeitschriftenartikel

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Urheber

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 Urheber:
Minnigerode, G. v.1, Autor
Armbrüster, H.1, Autor
Riblet, G.1, Autor
Steglich, F.2, Autor           
Winzer, K.1, Autor
Affiliations:
1external, ou_persistent22              
2External Organizations, ou_persistent22              

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Schlagwörter: -
 Zusammenfassung: At low temperatures two phenomena of collective behavior of the conduction electrons in metals are known: superconductivity and the Kondo effect. With the system (La, Ce) Al2 we succeeded in demonstrating a strong interaction between these two phenomena as predicted by Müller-Hartmann and Zittartz in 1971.1 The most unusual behavior of this superconducting alloy is the vanishing of superconductivity below a second transition temperature at very low temperatures. This second transition back into the normal state was first observed by Riblet and Winzer2 in an adiabatic demagnetization cryostat with a standard ac mutual inductance technique. Figure 1 shows a typical example of these two transitions. The induction signal of the specimen compared to that of a clean LaAl2 probe of the same size is plotted vs. temperature. This specimen with 0.67 at. % Ce substitution of La in LaAl2 becomes superconducting between 1.5 and 1°K and normal again below 0.5°K. As a consequence of this second transition, the temperature dependence of all the other superconducting properties becomes strange. It is therefore proposed to call such an alloy a “Kondo superconductor.”

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 Datum: 1974-06-06
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1007/978-1-4613-4520-6_99
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Titel: Low Temperature Physics
Genre der Quelle: Zeitschrift
 Urheber:
Timmerhaus, K. D.1, Herausgeber
O'Sullivan, W. H.1, Autor
Hammel, E. F.1, Autor
Affiliations:
1 external, ou_persistent22            
Ort, Verlag, Ausgabe: Woodbury, NY : The Institute
Seiten: - Band / Heft: LT13 Artikelnummer: - Start- / Endseite: 567 - 573 Identifikator: ISSN: 1063-777X
CoNE: https://pure.mpg.de/cone/journals/resource/954922836230