The lower symmetry electron-density distribution and the charge transport anisotropy in cubic dodecaboride LuB12. (8th June 2018)

• Record Type: Journal Article
• Authors: Bolotina, Nadezhda B; Dudka, Alexander P; Khrykina, Olga N; Krasnorussky, Vladimir N; Shitsevalova, Natalya Yu; Filipov, Volodymyr B; Sluchanko, Nikolay E
• Is Part Of: Journal of physics. Volume 30:Number 26(2018)
• Publication Date: 2018-06-08
• Subjects: higher borides -- crystal structure -- electron-density distribution -- charge transport anisotropy; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/aac742
• Languages: English
• ISSNs: 0953-8984

Abstract

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 m 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 .