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The Fine Structure of Wannier‐Mott Excitons in a Cubic Crystal and Its Behaviour in an Electric Field
Author(s) -
Agekyan V. T.,
Monozon B. S.,
Shiryapov I. P.
Publication year - 1974
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.2220660140
Subject(s) - electric field , exciton , series (stratigraphy) , extrapolation , condensed matter physics , dipole , crystal (programming language) , field (mathematics) , cubic crystal system , physics , chemistry , quantum mechanics , mathematics , mathematical analysis , paleontology , computer science , pure mathematics , biology , programming language
The anisotropy of the forbidden transitions in the absorption spectrum of the exciton yellow series of cuprous oxide in an electric field has been studied. The group‐theoretical analysis of electric field effect on transitions with different orbital quantum numbers l makes it possible to reveal the P‐, S‐, and D‐series of exciton levels on the basis of experimental data. The position of dipole‐active and ‐inactive levels has been determined by extrapolation to zero field, which enables one to study the l ‐splitting in a cubic crystal. With the l ‐splitting, the P‐series remains exactly hydrogen‐like, the D‐series preserves an approximate hydrogen‐like behaviour, and the S‐series looses its hydrogen‐like behaviour.