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Document type:
Zeitschriftenaufsatz 
Author(s):
Barakat, S.; Braithwaite, D.; Alireza, P.; Grube, K.; Uhlarz, M.; Wilson, J.; Pfleiderer, C.; Flouquet, J.; Lonzarich, G. 
Title:
High-Pressure Investigations of the Itinerant Ferromagnet {{CoS2}} 
Abstract:
The cubic pyrite compound CoS2 is an itinerant-electron ferromagnet with a Curie temperature of Tc=122K. Measurements of its electrical resistivity in quasi-hydrostatic Bridgman cells were performed up to pressures of p=15GPa. Tc is monotonically decreased by the application of external pressure and a first-order quantum phase transition was inferred at a pressure of pc$\simeq$6GPa. The temperature dependence of the resistivity at low temperatures (T=0.3\textendash{}20K) changes from a power-law with temperature exponent n=2 in the ferromagnetic phase to n$<$1.7 in the paramagnetic phase at pressures beyond pc. 
Keywords:
Quantum phase transition,Cobalt disulphide,Itinerant ferromagnet 
Journal title:
Physica B: Condensed Matter 
Year:
2005 
Journal volume:
359-361 
Month:
apr 
Pages contribution:
1216 
Print-ISSN:
0921-4526