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Pressure Studies of the Conductivity Mechanisms in Electron‐Irradiated Pb 1—x Sn x Se
Author(s) -
Skipetrov E. P.,
Kovalev B. B.,
Skipetrova L. A.,
Zvereva E. A.
Publication year - 1999
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/(sici)1521-3951(199901)211:1<539::aid-pssb539>3.0.co;2-c
Subject(s) - condensed matter physics , electron , hall effect , magnetic field , thermal conduction , irradiation , materials science , conduction band , conductivity , insulator (electricity) , electrical resistivity and conductivity , charge carrier , metal , metal–insulator transition , physics , nuclear physics , optoelectronics , quantum mechanics , metallurgy , composite material
The dependence of the Hall constant on the magnetic field ( B ≤ 7 T) in the vicinity of the insulator–metal transition induced by pressure ( P ≤ 18 × 10 8 Pa) in Pb 1— x Sn x Se ( x ≤ 0.03) alloys irradiated with electrons ( T ≈ 300 K, E = 6 MeV, Φ ≤ 7.1 × 10 17 cm —2 ) has been investigated. The main parameters of charge carriers were obtained by comparing experimental data with theoretical dependences of Hall constant on the magnetic field calculated in the frame of the two‐band model and found to be in good agreement with them. It was shown that in the vicinity of the insulator–metal transition at least three conduction mechanisms should be taken into account.