Kudła S., Dyrdał A., Dugaev V.K., Berakdar J., Barnaś J.
Phys. Rev. B 100, pp 205428 (2019)Using the Green functions method we study the transport properties of surface electrons of topological insulators in the presence of a correlated random exchange field. Such an exchange field may be induced by a random magnetization with correlated fluctuations. We determine the relaxation times due to scattering from the magnetization fluctuations and also from randomly distributed scalar impurities. The longitudinal charge conductivity is evaluated and discussed while accounting for vertex corrections.
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