Experimental arguments for a non-zero transition temperature in RKKY Heisenberg spin glasses without anisotropy

نویسندگان

  • A. Fert
  • N. De Courtenay
  • H. Bouchiat
چکیده

2014 While the existence of a phase transition at finite Tc is well admitted for Ising spin glasses in 3dimensions, recent theoretical studies have proposed that Tc is zero in Heisenberg spin glasses and that the finite Tc of real systems is induced by the anisotropy. To clear up this question, we analyse the influence of the anisotropy on the critical behaviour and the transition temperature of CuMn and AgMn alloys doped with Au or Pt. This analysis rather suggests a finite Tc for RKKY Heisenberg spin glasses in the limit of zero anisotropy. J. Phys. France 49 (1988) 1173-1178 JUILLET 1988, Classification Physics Abstracts 75.30 75.30G 75.30H 75.40

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تاریخ انتشار 2016