Linear Positive Magnetoresistivity of the Bi1.9Lu0.1Te3 Alloy with Inhomogeneous Micrograined Structure

Authors O.N. Ivanov , M.N. Yaprintsev , R.A. Lyubushkin , O.N. Soklakova

Belgorod State University, 85, Pobedy st., 308015 Belgorod, Russia

Issue Volume 8, Year 2016, Number 4
Dates Received 08 June 2016; published online 29 November 2016
Citation O.N. Ivanov, M.N. Yaprintsev, R.A. Lyubushkin, O.N. Soklakova, J. Nano- Electron. Phys. 8 No 4(1), 04033 (2016)
DOI 10.21272/jnep.8(4(1)).04033
PACS Number(s) 72.10.Fk, 72.15. – v
Keywords Linear Magnetoresistance, Bi1 (2) , 9Lu0 (2) , 1Te3 alloy, Inhomogeneous Microstructure, Carrier Mobility.
Annotation Positive nonsaturating transverse magnetoresistivity (MR) has been observed below room temperature in the Bi1.9Lu0.1Te3 alloy with inhomogeneous micrograined structure. A crossover from parabolic MR ~ B2 dependence in low magnetic fields to linear MR ~ B dependence in high fields was found in the magnetoresistivity curves. The crossover field is shifted to lower magnetic fields as temperature decreases. Within the temperature range of “metal” type of conductivity, the temperature dependences of the specific electrical resistivity and MR magnitude are determined by the temperature dependence of the carrier mobility due to acoustic phonon scattering. Linear MR can be associated with microstructural inhomogeneity leading to strong electrical disorder of the Bi1.9Lu0.1Te3.