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- Titel:
High-Pressure Investigations of the Itinerant Ferromagnet {{CoS2}}
- Dokumenttyp:
- Zeitschriftenaufsatz
- Autor(en):
- Barakat, S.; Braithwaite, D.; Alireza, P.; Grube, K.; Uhlarz, M.; Wilson, J.; Pfleiderer, C.; Flouquet, J.; Lonzarich, G.
- 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.
- Stichworte:
- Quantum phase transition,Cobalt disulphide,Itinerant ferromagnet
- Zeitschriftentitel:
- Physica B: Condensed Matter
- Jahr:
- 2005
- Band / Volume:
- 359-361
- Monat:
- apr
- Seitenangaben Beitrag:
- 1216
- Volltext / DOI:
- doi:10.1016/j.physb.2005.01.350
- Print-ISSN:
- 0921-4526
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