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Temperature-Dependent Skew Scattering in an AuMn Spin Glass

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Abstract

The Hall effect seen at low temperatures in dilute alloys of a transition metal dissolved in a group-1B noble metal shows1,2 a large component that clearly does not arise from the classical Lorentz force. This extraordinary component is found generally to increase with decreasing temperature, to be approximately proportional to the solute’s concentration, and to show a saturation when the applied field strength B is increased sufficiently.1 For all but the most dilute alloys,1 this component far outweighs the classical contribution arising from the Lorentz force. This extraordinary component has been called3−5 the “skew component” of the Hall effect, and its origin has been attributed3−6 to the asymmetric (or skew) scattering of the conduction electrons as a result of spin-orbit coupling during their scattering by the magnetic ion.6 We have studied the temperature dependence of this component in the Hall resistivity ρH through the spin glass transition in an Au + 8.1 at.% Mn alloy in applied fields in the range 0.025 – 0.1T. The results show features that are related tentatively to the behaviour of magnetic clusters and ‘loose spins’.

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© 1977 Plenum Press, New York

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Hurd, C.M., McAlister, S.P. (1977). Temperature-Dependent Skew Scattering in an AuMn Spin Glass. In: Levy, R.A., Hasegawa, R. (eds) Amorphous Magnetism II. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-4178-9_6

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  • DOI: https://doi.org/10.1007/978-1-4613-4178-9_6

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4613-4180-2

  • Online ISBN: 978-1-4613-4178-9

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