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Enhancing Magnetic Ordering in Cr-Doped Bi<sub>2</sub>Se<sub>3</sub> Using High-<i>T</i><sub>C</sub> Ferrimagnetic Insulator
We report a study of enhancing the magnetic ordering in a model magnetically doped topological insulator (TI), Bi(2-x)Cr(x)Se(3), via the proximity effect using a high-TC ferrimagnetic insulator Y(3)Fe(5)O(12). The FMI provides the TI with a source of exchange interaction yet without removing the nontrivial surface state. By performing the elemental …