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Magneto‐Photoluminescence and Transport Measurements on Modulation‐Doped Cd 1—x Mn x Te/Cd 1—y Mg y Te Single Quantum Wells
Author(s) -
Takano F.,
Kuroda S.,
Takita K.,
Imanaka Y.,
Takamasu T.,
Kido G.
Publication year - 2002
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 - 10.1002/1521-3951(200201)229:2<751::aid-pssb751>3.0.co;2-j
Subject(s) - photoluminescence , condensed matter physics , landau quantization , doping , quantum well , ground state , line (geometry) , materials science , modulation (music) , magneto , magnetic field , physics , chemistry , optics , optoelectronics , atomic physics , voltage , mathematics , quantum mechanics , laser , geometry , acoustics
Magneto‐photoluminescence (PL) and transport measurements were performed simultaneously on n‐type modulation‐doped Cd 1— x Mn x Te/Cd 1— y Mg y Te single quantum wells with a Mn concentration x = 0.05 and 2D carrier concentrations in the range of (1.8–4.6) × 10 11 cm —2 . The simultaneous measurements made it possible to determine the field positions of the integer filling indices without any ambiguity. In magneto‐PL measurements, it was found that the main PL line, corresponding to the transition between the ground Landau levels, skipped to the higher energy side at the field of the filling index ν = 1. Further a kink of the PL line was observed between ν = 1 and 2, which is considered to correspond to the switch of the Fermi level between the opposite spin states within the same filling index.