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Magnetic polarons and magnetoresistance in EuB6

M. J. Calderon·L. G. L. Wegener·P. B. Littlewood
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Abstract

EuB6 is a low carrier density ferromagnet which exhibits large magnetoresistance, positive or negative depending on temperature. The formation of magnetic polarons just above the magnetic critical temperature has been suggested by spin-flip Raman scattering experiments. We find that the fact that EuB6 is a semimetal has to be taken into account to explain its electronic properties, including magnetic polarons and magnetoresistance.

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M. J. Calderon, L. G. L. Wegener, P. B. Littlewood. 2003-12-17. Magnetic polarons and magnetoresistance in EuB6. https://doi.org/10.1103/physrevb.70.092408

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