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Influence of Exchange Interaction on the Quantum Transport Phenomena in Hg 1− x Mn x Te
Author(s) -
Jaczyński M.,
Kossut J.,
Gałązka R. R.
Publication year - 1978
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.2220880108
Subject(s) - condensed matter physics , seebeck coefficient , electron , amplitude , magnetoresistance , exchange interaction , thermoelectric effect , ion , physics , thermal conduction , quantum , monotonic function , chemistry , quantum mechanics , magnetic field , mathematics , mathematical analysis , ferromagnetism
A series of anomalous features of the Shubnikov‐de Haas effect in n‐type Hg 1− x Mn x Te mixed crystals is detected, e.g., strong temperature dependence of the ShdH peak positions, large values of electronic g ‐factors, non‐monotonic behaviour of the amplitude of ShdH oscillations as a function of temperature. These features cannot be explained with the help of usual theoretical models. They are explained within the modified Pidgeon‐Brown model including the exchange interaction between conduction electrons and electrons from 3d shell of Mn ions. The quantum oscillations of the thermoelectric power are also observed. The behaviour of amplitude and peak positions of thermoelectric power are compatible with those of magnetoresistance.