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arXiv · 1511.06604

Nanomaterials of the topological crystalline insulators, Pb_(1-x)Sn_(x)Te and Pb_(1-x)Sn_(x)Se

M Saghir·A. M. Sanchez·S. A. Hindmarsh·S. J. York·G. Balakrishnan
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Abstract

Topological insulators (TIs) and topological crystal insulators (TCIs) exhibit exotic surface properties. We present optimised growth procedures to obtain high quality bulk crystals of the TCIs Pb_(1-x)Sn_(x)Te and Pb_(1-x)Sn_(x)Se, and nanowires from the bulk crystals using the vapour-liquid-solid (VLS) technique. Nanowires of Pb_(1-x)Sn_(x)Te have been produced with a Sn composition of approx. x = 0.25, at which a transition from trivial to non-trivial insulator is reported. The results obtained on the growth of nanomaterials of Pb_(1-x)Sn_(x)Se are also described. Detailed characterisation of the bulk crystals and the nanomaterials through x-ray diffraction, microscopy techniques and EDX analysis are presented.

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M Saghir, A. M. Sanchez, S. A. Hindmarsh, S. J. York, G. Balakrishnan. 2015-11-20. Nanomaterials of the topological crystalline insulators, Pb_(1-x)Sn_(x)Te and Pb_(1-x)Sn_(x)Se. https://doi.org/10.1021/acs.cgd.5b00577

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