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Relaxation Time and Effective Masses for Charge Carriers in Semimetallic BiSb Alloys versus Alloy Composition
Author(s) -
Braune W.,
Straubel U.,
Kubicki N.,
Lebech J.,
Saermark K.
Publication year - 1981
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.2221060222
Subject(s) - alloy , condensed matter physics , electron , relaxation (psychology) , fermi surface , cyclotron resonance , effective mass (spring–mass system) , materials science , tilt (camera) , charge carrier , cyclotron , atomic physics , physics , nuclear physics , metallurgy , mechanical engineering , quantum mechanics , psychology , social psychology , engineering
Recent investigations on the propagation and damping of magnetoplasma waves in semi‐metallic BiSb alloys allow for the conclusion that the effective masses of the holes and the tilt angle of the electron ellipsoids of the Fermi‐surface do not vary in the semimetallic region of the alloy system. The variations of the effective masses for the electrons with alloy composition can be deduced from magnetoplasma wave data and are in good agreement with cyclotron resonance‐ and quantumoscillation experiments. Observation of the wave damping for different measuring configurations indicates, that the relaxation time for the holes decreases more strongly with increasing Sb‐concentration than the relaxation time for the electrons does.