Phys. Rev. B 30, 5342–5344 (1984)Magnetization dependence of magnetoresistance in CuMn spin-glassesReceived 29 May 1984; published in the issue dated 1 November 1984 It is shown that the negative transverse magnetoresistance varies as the square of the bulk magnetization over a wide range of temperature and magnetic field in CuMn (0.7 and 4.4 at.%) spin-glasses. The constant of proportionality α is independent of field and is weakly dependent on temperature. This is in contrast to the strong, monotonically decreasing α with increasing temperature reported earlier by Schmitt and Jacobs. These results are discussed in the light of the present theories. © 1984 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.30.5342
DOI:
10.1103/PhysRevB.30.5342
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