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arXiv · 1802.09770

Magnetic and transport properties of Sb2Te3 doped with high concentration of Cr

Sachin Gupta·Shun Kanai·Fumihiro Matsukura·Hideo Ohno
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Abstract

We report on molecular beam epitaxy and properties of a magnetic topological insulator, Cr doped Sb2Te3. The composition analysis reveals that Cr replaces Sb site, and x-ray diffraction confirms that single phase textured crystal structure can be obtained for (CrxSb1-x)2Te3 with x up to 0.44. Further increase in x results in phase separation or precipitates in the material. The Curie temperature TC increases with x up to 0.44, and reaches to 250 K, which is the highest TC observed till now in magnetically doped topological insulators.

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Sachin Gupta, Shun Kanai, Fumihiro Matsukura, Hideo Ohno. 2018-02-27. Magnetic and transport properties of Sb2Te3 doped with high concentration of Cr. https://doi.org/10.7567/apex.10.103001

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