Large magnetoresistance and critical spin fluctuations in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">GdI</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span>

I. Eremin; P. Thalmeier; P. Fulde; R. K. Kremer; K. Ahn; A. Simon

doi:10.1103/PhysRevB.64.064425

Large magnetoresistance and critical spin fluctuations in ${GdI}_{2}$

I. Eremin, P. Thalmeier, P. Fulde, R. K. Kremer, K. Ahn, and A. Simon

Phys. Rev. B 64, 064425 – Published 24 July 2001

Abstract

The effect of the large negative magnetoresistance in layered ferromagnetic metal ${GdI}_{2}$ has been explained on the basis of the $s - f$ exchange model. Assuming the Ornstein-Zernike form of the spin-spin correlation function for the two-dimensional case, we calculate the resistivity in the vicinity of the ferromagnetic transition. The influence of the magnetic field was taken into account via the generalized dynamical-scaling approach and molecular-field approximation. The results are found to be in good agreement with experiment.

Received 12 February 2001

DOI:https://doi.org/10.1103/PhysRevB.64.064425

Authors & Affiliations

I. Eremin^1,2, P. Thalmeier³, P. Fulde¹, R. K. Kremer⁴, K. Ahn⁴, and A. Simon⁴

¹Max-Planck-Institut für Physik komplexer Systeme, D-01187 Dresden, Germany
²Physics Department, Kazan State University, 420008 Kazan, Russia
³Max-Planck-Institut für Chemische Physik fester Stoffe, D-01187 Dresden, Germany
⁴Max-Planck-Institut für Festkörperforschung, D-70569 Stuttgart, Germany

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Vol. 64, Iss. 6 — 1 August 2001

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