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Author |
Encina, S.; Pedrazzini, P. |
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Title |
Poder termoeléctrico del Ce(Pd1-xCux)2Si2 |
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Conference Article |
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Year |
2013 |
Publication |
Anales de la Asociacion Fisica Argentina |
Abbreviated Journal |
Anales AFA |
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24 |
Issue |
2 |
Pages |
43-46 |
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Keywords |
poder termoeléctrico, resistividad eléctrica, bajas temperaturas, CePd 2Si2, CeCu2Si2, temperatura de Kondo, campo cristalino, compuestos de Ce, magnetismo |
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Abstract |
Se presenta un estudio del poder termoeléctrico, S(T), a bajas temperaturas de la aleación Ce(Pd1-xCux)2Si2. Las curvas deS(T) tienen una dependencia similar en todo el rango de sustitución, con tres anomalÃas: un máximo positivo de altatemperatura, un mÃnimo negativo y un máximo de bajas temperaturas. Se discute brevemente el origen de las anomalÃas,para lo cual se compara S(T) con datos de resistividad eléctrica provenientes de la literatura. Para realizar las medicionesde poder termoeléctrico se diseñó y construyó un dispositivo que puede ser montado en diversos crióstatos. |
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BT @ pedrazp @ |
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674 |
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Author |
Giriat, G.; Ren, Z.; Pedrazzini, P.; Jaccard, D. |
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Title |
High pressure investigation of superconducting signatures in CeCu2Si2: ac-magnetic susceptibility, ac-heat capacity, resistivity and thermopower |
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Journal Article |
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Year |
2015 |
Publication |
Solid State Communications |
Abbreviated Journal |
Solid State Commun. |
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Volume |
209–210 |
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55-58 |
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Keywords |
CeCu2Si2; Superconductivity; Magnetic susceptibility; High pressure |
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Taking advantage of a novel multiprobe setup we have measured, on a unique sample, the ac-magnetic susceptibility, the resistivity, the ac-specific heat and the thermopower of the superconductor heavy fermion CeCu2Si2 under pressure up to 5.1 GPa. At the superconducting transition temperature Tc, the Meissner signal corresponds to that expected for the sample volume and coincides with the specific heat jump and the resistive transition completion temperatures. Differing from previous observations, here the susceptibility measurements did not reveal any anomaly in the vicinity of the resistive transition onset. |
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0038-1098 |
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720 |
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