High-pressure investigations of the itinerant ferromagnet CoS2

Samira Barakat; Daniel Braithwaite; Patricia Alireza; Kai Grube; Marc Uhlarz; John Wilson; Christian Pfleiderer; Jacques Flouquet; Gilbert Lonzarich

doi:10.1016/j.physb.2005.01.350

High-pressure investigations of the itinerant ferromagnet CoS₂

Samira Barakat, Daniel Braithwaite, Patricia Alireza, Kai Grube, Marc Uhlarz, John Wilson, Christian Pfleiderer, Jacques Flouquet, Gilbert Lonzarich

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

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≃6GPa. The temperature dependence of the resistivity at low temperatures (T=0.3-20 K) 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.

Original language	English
Pages (from-to)	1216-1218
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	359-361
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2005.01.350
State	Published - 30 Apr 2005
Externally published	Yes

Keywords

CoS
Cobalt disulphide
Itinerant ferromagnet
Quantum phase transition

Access to Document

10.1016/j.physb.2005.01.350

Cite this

@article{4a7330204d2d49bc88283e20cd0c15ff,

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≃6GPa. The temperature dependence of the resistivity at low temperatures (T=0.3-20 K) 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 = "CoS, Cobalt disulphide, Itinerant ferromagnet, Quantum phase transition",

author = "Samira Barakat and Daniel Braithwaite and Patricia Alireza and Kai Grube and Marc Uhlarz and John Wilson and Christian Pfleiderer and Jacques Flouquet and Gilbert Lonzarich",

year = "2005",

month = apr,

day = "30",

doi = "10.1016/j.physb.2005.01.350",

language = "English",

volume = "359-361",

pages = "1216--1218",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier B.V.",

number = "SPEC. ISS.",

}

TY - JOUR

T1 - High-pressure investigations of the itinerant ferromagnet CoS2

AU - Barakat, Samira

AU - Braithwaite, Daniel

AU - Alireza, Patricia

AU - Grube, Kai

AU - Uhlarz, Marc

AU - Wilson, John

AU - Pfleiderer, Christian

AU - Flouquet, Jacques

AU - Lonzarich, Gilbert

PY - 2005/4/30

Y1 - 2005/4/30

N2 - 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≃6GPa. The temperature dependence of the resistivity at low temperatures (T=0.3-20 K) 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.

AB - 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≃6GPa. The temperature dependence of the resistivity at low temperatures (T=0.3-20 K) 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.

KW - CoS

KW - Cobalt disulphide

KW - Itinerant ferromagnet

KW - Quantum phase transition

UR - http://www.scopus.com/inward/record.url?scp=18144393377&partnerID=8YFLogxK

U2 - 10.1016/j.physb.2005.01.350

DO - 10.1016/j.physb.2005.01.350

M3 - Article

AN - SCOPUS:18144393377

SN - 0921-4526

VL - 359-361

SP - 1216

EP - 1218

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - SPEC. ISS.

ER -

High-pressure investigations of the itinerant ferromagnet CoS₂

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this