Heavy fermion behavior in CePtSi and CeRuSi

Heavy fermion behavior in CePtSi and CeRuSi

We present results of specific heat, electrical resistance, and magnetic susceptibility measurements on the heavy fermion system CePtSi and compare it to CeRuSi. Both compounds show a low-temperature maximum in cp/T, usually associated with the formation of a coherent heavy fermion ground state. An...

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Veröffentlicht in:J. Appl. Phys.; (United States) 1988-04, Vol.63 (8), p.3405-3407
Hauptverfasser: Rebelsky, L., Reilly, K., Horn, S., Borges, H., Thompson, J. D., Willis, J. O., Aikin, R., Caspari, R., Bredl, C. D.
Format: Artikel
Sprache:eng
Schlagworte:
360603 - Materials- Properties
CERIUM COMPOUNDS
CERIUM SILICIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MATERIALS SCIENCE
MEDIUM TEMPERATURE
PHYSICAL PROPERTIES
PLATINUM COMPOUNDS
PLATINUM SILICIDES
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
RUTHENIUM COMPOUNDS
RUTHENIUM SILICIDES
SILICIDES
SILICON COMPOUNDS
SPECIFIC HEAT
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
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Beschreibung
Zusammenfassung:We present results of specific heat, electrical resistance, and magnetic susceptibility measurements on the heavy fermion system CePtSi and compare it to CeRuSi. Both compounds show a low-temperature maximum in cp/T, usually associated with the formation of a coherent heavy fermion ground state. An additional feature in cp/T is observed for CePtSi and is attributed to cooperative magnetism, an interpretation confirmed by magnetic measurements. A comparison with other heavy fermion systems, especially stoichiometric and nonstoichiometric CeCu2Si2, is performed.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.340775