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arXiv · 1804.02255

The lower symmetry electron-density distribution and the charge transport anisotropy in cubic dodecaboride LuB12

Nadezhda B. Bolotina·Alexander P. Dudka·Olga N. Khrykina·Vladimir N. Krasnorussky·Natalya Yu. Shitsevalova·Volodymyr B. Filipov·Nikolay E. Sluchanko
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Abstract

High-quality single crystals of LuB12 are grown using the induction zone melting method. The X-ray data are collected at temperatures 293, 135, 95, 50 K. The crystal structure of LuB12 can be refined with record low R-factor in the cubic Fm-3m symmetry group despite reiterated observations of the cubic symmetry distortions both in the unit-cell values and in the physical properties. A peculiar computing strategy is developed to resolve this contradiction. True symmetry of the electron-density distribution in LuB12 is proved to be much lower than cubic as a result, which correlates very accurately with anisotropy of transport properties of LuB12.

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Nadezhda B. Bolotina, Alexander P. Dudka, Olga N. Khrykina, Vladimir N. Krasnorussky, Natalya Yu. Shitsevalova, Volodymyr B. Filipov, Nikolay E. Sluchanko. 2018-04-06. The lower symmetry electron-density distribution and the charge transport anisotropy in cubic dodecaboride LuB12. https://doi.org/10.1088/1361-648x/aac742

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