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High Pressure Magnetophotoluminescence in Diluted Magnetic Semiconductors Cd 1−x Mn x Se and Cd 1−x Co x Se
Author(s) -
Kuroda N.,
Matsuda Y.
Publication year - 1996
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.2221980109
Subject(s) - hydrostatic pressure , magnetic semiconductor , semiconductor , exchange interaction , coulomb , exciton , chemistry , condensed matter physics , kinetic energy , materials science , crystallography , analytical chemistry (journal) , ferromagnetism , physics , electron , thermodynamics , optoelectronics , quantum mechanics , chromatography
This paper reviews experimental studies on the magnetophotoluminescence in diluted magnetic semiconductors Cd 1−x Mn x Se with x = 0.01, 0.05, 0.10, and 0.25 and Cd 1−x Co x Se with x = 0.012 at 1.4 and 4.2 K under hydrostatic pressures up to 2 GPa. The studies focus attention to the pressure dependence of the magnetic dichroism of the 1 s exciton state under magnetic fields of 0 to 27 T. Pressure strengthens the exciton‐Mn(Co) and Mn(Co)‐Mn(Co) exchange interactions. An analysis of these results in terms of the kinetic exchange theory shows that the on‐site Coulomb energy U and the chargetransfer energy Δ are reduced markedly by pressure.