PROPERTIES OF SPIN GLASS SUPERCONDUCTORS Academic Article uri icon

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abstract

  • Magnetic impurities at random sites on a lattice and interacting via a long range indirect Rudermann–Kittel–Kasuya–Yosida interaction, can undergo a spin glass transition due to the importance of frustration and competing interactions. Within a simple model of the freezing transition in which the effect of the magnetism on the superconducting electrons reduces to a temperature dependent effective scattering time, we have worked out several superconducting properties and here present results for the upper critical magnetic field. We find that its temperature dependence is profoundly altered over the pure case and strongly reflects the temperature dependence of the magnetic microscopic parameters.

publication date

  • January 1993