Colossal negative magnetoresistance in an antiferromagnet

Julia Y. Chan, Susan M. Kauzlarich, Peter Klavins, Robert N. Shelton, David J. Webb

Research output: Contribution to journalArticle

73 Citations (Scopus)

Abstract

The magnetization and resistivity of single crystals of the Zintl compound Eu14MnBi11 are measured as functions of temperature and applied magnetic field. The magnetization data show an apparent antiferromagnetic transition at TN = 32 K even though the high-temperature susceptibility suggests that the exchange coupling is ferromagnetic in nature. The zero-field resistivity is approximately independent of temperature above 32 K. Below 32 K the resistivity increases slightly and peaks at about 20 K before decreasing as the temperature is decreased. This temperature dependence is fairly normal for an antiferromagnetic metal. On the other hand, in contrast to other antiferromagnets, the single-crystal magnetoresistance is large and negative at all temperatures below about 3TN. In addition, the dependence of the resistivity upon the magnetization is quite similar to the colossal-magnetoresistance materials.

Original languageEnglish (US)
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume57
Issue number14
StatePublished - Apr 1 1998

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Magnetoresistance
electrical resistivity
magnetization
Magnetization
Temperature
temperature
single crystals
Colossal magnetoresistance
Single crystals
Exchange coupling
magnetic permeability
temperature dependence
Metals
magnetic fields
metals
Magnetic fields

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Chan, J. Y., Kauzlarich, S. M., Klavins, P., Shelton, R. N., & Webb, D. J. (1998). Colossal negative magnetoresistance in an antiferromagnet. Physical Review B - Condensed Matter and Materials Physics, 57(14).

Colossal negative magnetoresistance in an antiferromagnet. / Chan, Julia Y.; Kauzlarich, Susan M.; Klavins, Peter; Shelton, Robert N.; Webb, David J.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 57, No. 14, 01.04.1998.

Research output: Contribution to journalArticle

Chan, JY, Kauzlarich, SM, Klavins, P, Shelton, RN & Webb, DJ 1998, 'Colossal negative magnetoresistance in an antiferromagnet', Physical Review B - Condensed Matter and Materials Physics, vol. 57, no. 14.
Chan JY, Kauzlarich SM, Klavins P, Shelton RN, Webb DJ. Colossal negative magnetoresistance in an antiferromagnet. Physical Review B - Condensed Matter and Materials Physics. 1998 Apr 1;57(14).
Chan, Julia Y. ; Kauzlarich, Susan M. ; Klavins, Peter ; Shelton, Robert N. ; Webb, David J. / Colossal negative magnetoresistance in an antiferromagnet. In: Physical Review B - Condensed Matter and Materials Physics. 1998 ; Vol. 57, No. 14.
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