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Regular version of the site

Article

Thermodynamics of localized magnetic moments in a Dirac conductor

Physical Review B: Condensed Matter and Materials Physics. 2012. Vol. 86. No. 5. P. 054424.
Burovski E., Cheianov V., Falko V., Szyniszewski, M., Sherkunov Y.

 We show that the magnetic susceptibility of a dilute ensemble of magnetic impurities in a conductor with a relativistic electronic spectrum is nonanalytic in the inverse temperature at 

T10

. We derive a general theory of this effect and construct the high-temperature expansion for the disorder averaged susceptibility to any order, convergent at all temperatures down to a possible ordering transition. When applied to Ising impurities on a surface of a topological insulator, the proposed general theory agrees with Monte Carlo simulations, and it allows us to find the critical temperature of the ferromagnetic phase transition.