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Electroabsorption near the n = 1 lines of the yellow and green series of Cu 2 O
Author(s) -
Deiss J. L.,
Daunois A.,
Nikitine S.
Publication year - 1971
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.2220470122
Subject(s) - quadrupole , electric field , dipole , line (geometry) , magnetic dipole , series (stratigraphy) , modulation (music) , physics , magnetic field , atomic physics , exciton , quadrupole magnet , optics , chemistry , condensed matter physics , geometry , quantum mechanics , paleontology , mathematics , acoustics , biology
The effect of an ac electric field on the n = 1 lines of the yellow and green series of Cu 2 O has been studied at 4.2°K using single crystals, polarized light, and a modulation technique. In the field, an “ignition” of the two lines λ 1S y= 6098 Å and λ 1S g= 5830 Å is observed. This ignition effect depends on the geometry of the experiment, and gives information on the nature of both transitions as well as on the bands involved in the formation of these IS excitons. The line λ 1S gcorresponds to an orthoexcitonic electric quadrupole transition Γ 25 + , while the line λ 1S gis a mixed electric quadrupole Γ 12 +and magnetic dipole Γ 15 +transition, with a stronger magnetic dipole character.