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The Conduction Band Parameters and Scattering Mechanisms in Solid Solutions Based on Bi 2 Te 3
Author(s) -
Kutasov V. A.,
Lukyanova L. N.
Publication year - 1989
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221540226
Subject(s) - scattering , tilt (camera) , condensed matter physics , tensor (intrinsic definition) , conduction band , thermal conduction , effective mass (spring–mass system) , degeneracy (biology) , charge carrier , physics , electronic band structure , materials science , optics , thermodynamics , electron , quantum mechanics , mathematics , geometry , bioinformatics , biology
Experimental weak‐field galvanomagnetic data are used to determine some conduction band parameters (the ratios of the effective mass tensor components m i / m j , the tilt angle of the principal axes of the constant energy ellipsoids, and the degeneracy parameter) using the many‐valley model of the band structure for n‐Bi 2 Te 3 and its solid solutions. The charge carrier scattering mechanism is discussed. It is shown that the scattering parameter is not equal to −0.5, e.g. the value specifies for the acoustic scattering mechanism. The effective scattering parameter r eff is calculated and its temperature and concentration dependences are found.