The magnetoresistance in GdNi: Magnetic-polaronic-like effect near Curie temperature and low temperature sign reversal

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dc.creatorMallik, R.
dc.creatorSampathkumaran, E. V.
dc.creatorPaulose, P. L.
dc.creatorNagarajan, V.
dc.date1998-12-04
dc.date.accessioned2026-07-07T03:12:17Z
dc.date.available2026-07-07T03:12:17Z
dc.descriptionThe results of magnetoresistance ($Δρ/ρ$)measurements in GdNi, in the temperature range 4.2 to 300 K are reported. The sign of $Δρ/ρ$ above the Curie temperature (Tc= 70 K) is negative and its magnitude in a magnetic field of 80kOe grows with decreasing temperature below 150 K with a peak value of about -20% at Tc. These features, qualitatively resembling those in giant magnetoresistance systems (manganates), are attributed to the formation of some kind of magnetic polarons induced by Gd. The magnetoresistance changes sign below 12 K which is attributed to subtle band structure effects.
dc.description4 pages Text (RevTex), 3 Postscript Figures (separate)
dc.identifierhttps://arxiv.org/abs/cond-mat/9812069
dc.identifierhttp://arxiv.org/abs/cond-mat/9812069
dc.identifierPhys. Review B Vol. 55 No. 14, R8650 (1997)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/28852
dc.subjectStrongly Correlated Electrons
dc.titleThe magnetoresistance in GdNi: Magnetic-polaronic-like effect near Curie temperature and low temperature sign reversal
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