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Magnetoconductivity of Trigonal Selenium Single Crystals
Author(s) -
Mell H.,
Stuke J.
Publication year - 1967
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.19670240118
Subject(s) - trigonal crystal system , perpendicular , condensed matter physics , atmospheric temperature range , selenium , hall effect , electron mobility , range (aeronautics) , materials science , chemistry , physics , electrical resistivity and conductivity , crystallography , thermodynamics , geometry , crystal structure , mathematics , quantum mechanics , metallurgy , composite material
Six of the eight magnetoconductivity components of trigonal Se are measured up to 30 kG over the temperature range 83 to 300 °K. Unlike the Hall mobility, which increases exponentially with temperature, the magnetoconductivity mobility decreases with rising temperature and, at high temperatures, is approximately proportional to T −3/2 . At 300 °K a value of 28 cm 2 /Vs is obtained for the mobility in the chain direction, whilst the Hall mobility at the same temperature is only about 0,2 cm 2 /Vs[1]. This discrepancy can be explained by assuming a strongly inhomogeneous hole concentration. The directional dependence of the magnetoconductivity is interpreted using a six‐ellipsoidal model. From this the ratio of the mobilities parallel and perpendicular to the chain direction is about 3.5.