Spin glass state in iron-doped Bi2Fe0 128Te2 844Se0 145 topological insulatorстатья
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Дата последнего поиска статьи во внешних источниках: 28 мая 2015 г.
Аннотация:The researching of dependence of magnetization from temperature T and magnetic field in the Bi2Te2.844Se0.145Fe0.128 single-cristal showed that it have spinglass-like state with freezing temperature T_f=40 K. It's electric resistivity up to 199 K is ~ 10^3 Ohm.cm and decreases with the temperature increase. At T > 120 K electric resistivity ~ 10^(-2) Ohm.cm and magnetization is four times smaller than in spinglass-like state. It can be assumed from these results that this sample topological insulator at T > 120 K and at small temperature, where it is spinglass-like, offers the breaking of the time reversal symmetry.