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Theory of Stark Effect in Crystals
Author(s) -
Enderlein R.,
Keiper R.,
Tausendfreund W.
Publication year - 1969
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.19690330104
Subject(s) - stark effect , electric field , condensed matter physics , superposition principle , absorption (acoustics) , diamond , field (mathematics) , degeneracy (biology) , quadratic equation , materials science , physics , optics , quantum mechanics , mathematics , bioinformatics , geometry , composite material , pure mathematics , biology
The change of the optical interband absorption of non‐conducting crystals in an external electric field is investigated. The degeneracy of the band structure is considered. The modification of the absorption by the electric field is shown to be the superposition of the Stark effect and of the Franz‐Keldysh effect. In particular, the transitions Γ 8 +→ Γ 7 −and X 5 → X 5 in diamond type crystals are considered. The transition Γ 8 +→ Γ 7 −shows a quadratic Stark effect and the transition X 5 → X 5 a linear one.