Galvanomagnetic properties of multicomponent solid solutions based on Bi and Sb chalcogenides

Author

Lukyanova, L.N. ; Kutasov, V.A. ; Popov, V.V. ; Konstantinov, P.P.

Author_Institution

Ioffe Phys.-Tech. Inst., Russian Acad. of Sci., St. Petersburg, Russia

fYear

2005

fDate

19-23 June 2005

Firstpage

426

Lastpage

429

Abstract

Galvanomagnetic properties of multicomponent solid solutions of n-Bi_2-xSb_xTe_3-y-zSe_yS_z composition were studied in weak and intermediate magnetic fields. Components of the effective mass tensor m_i/m_j were determined in the framework of the many-valley energy spectrum model using the isotropic scattering mechanism for a variety of solid solution compositions and electron concentrations. The influence of constant-energy surface parameters on the solid solutions thermoelectric efficiency was analyzed.

Keywords

amorphous semiconductors; antimony; bismuth compounds; galvanomagnetic effects; selenium; sulphur; thermoelectricity; Bi_2-xSb_xTe_3-y-zSe_yS_z; chalcogenides; constant-energy surface parameters; effective mass tensor; galvanomagnetic properties; intermediate magnetic field; isotropic scattering mechanism; many-valley energy spectrum model; multicomponent solid solutions; thermoelectric efficiency; weak magnetic field; Bismuth; Effective mass; Electrons; Magnetic fields; Magnetic properties; Scattering; Solid modeling; Tellurium; Tensile stress; Thermoelectricity;

fLanguage

English

Publisher

ieee

Conference_Titel

Thermoelectrics, 2005. ICT 2005. 24th International Conference on

ISSN

1094-2734

Print_ISBN

0-7803-9552-2

Type

conf

DOI

10.1109/ICT.2005.1519978

Filename

1519978