High-field transport properties of itinerant electron metamagnetic Co(S1-xSex)2

Title:	High-field transport properties of itinerant electron metamagnetic Co(S1-xSex)2
Authors:	Hirofumi Wada Yoshiro Maekawa Daichi Kawasaki
Keywords:	Itinerant electron metamagnetism;Magnetoresistance;Hall effect;Half metallic;High magneticfield
Issue Date:	2016
Publisher:	ĐHQGHN
Abstract:	The Co(S1-xSex)2 compounds are known to exhibit itinerant electron metamagnetism (IEM). We present field dependence of electrical resistivity and Hall effect of the compounds with 0 x<0.15. It was found that the magnetoresistance shows a positive jump associated with the IEM. This jump is nearly inde-pendent of temperature. We also observed a jump in the field dependence of Hall resistivity, which is attributable to the anomalous Hall effect due to the onset of ferromagnetism. Our analyses revealed that the ordinary Hall coefficient decreases considerably by the IEM. These results are discussed in terms of the proposed electronic structure of CoS2, in which a highly spin polarized state is achieved.
Description:	p. 179-184
URI:	http://repository.vnu.edu.vn/handle/VNU_123/58323
ISSN:	2468-2284
Appears in Collections:	Advanced Materials and Devices