TY - JOUR N2 - The paper covers some measurement aspects of transport of electrons through metals and semiconductors in magnetic field – magnetotransport – allowing for the determination of electrical parameters characteristic of three-dimensional (3D) topological insulators (TI) (i.e. those that behave like an insulator inside their volume and have a conductive layer on their surface). A characteristic feature of the 3D TI is also a lack of differences between the chemical composition of the conductive surface and the interior of the material tested and the fact that the electron states for its surface conductivity are topologically protected. In particular, the methods of generating strong magnetic fields, obtaining low temperatures, creating electrical contacts with appropriate geometry were presented, and the measurement methods were reviewed. In addition, the results of magnetotransport measurements obtained for two volumetric samples based on the HgCdTe compound grown with the molecular beam epitaxy method are presented. L1 - http://www.czasopisma.pan.pl/Content/121806/PDF/art08_final.pdf L2 - http://www.czasopisma.pan.pl/Content/121806 PY - 2021 IS - No 4 EP - 734 DO - 10.24425/mms.2021.137708 KW - materials science KW - magnetotransport KW - topological insulators KW - quantum Hall effect A1 - Śliż, Paweł A1 - Sankowska, Iwona A1 - Bobko, Ewa A1 - Szeregij, Eugeniusz A1 - Grendysa, Jakub A1 - Tomaka, Grzegorz A1 - Żak, Dariusz A1 - Płoch, Dariusz A1 - Jasik, Agata PB - Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation VL - vol. 28 DA - 2021.12.22 T1 - Magnetotransport measurements as a tool for searching 3D topological insulators SP - 725 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/121806 T2 - Metrology and Measurement Systems ER -