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

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 Fmm symmetry group despite reiterated observations of the cubi...

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Published inJournal of physics. Condensed matter Vol. 30; no. 26; p. 265402
Main Authors Bolotina, Nadezhda B, Dudka, Alexander P, Khrykina, Olga N, Krasnorussky, Vladimir N, Shitsevalova, Natalya Yu, Filipov, Volodymyr B, Sluchanko, Nikolay E
Format Journal Article
LanguageEnglish
Published IOP Publishing 08.06.2018
Subjects
charge transport anisotropy
crystal structure
electron-density distribution
higher borides
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Summary: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 Fmm 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.
Bibliography:JPCM-111528.R1
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ISSN:0953-8984
1361-648X
DOI:10.1088/1361-648X/aac742