On the First Excited State of the Biexciton in CuCl | Zendy

Ekardt W. | Zendy; Sheboul M. I. | Zendy

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On the First Excited State of the Biexciton in CuCl

Author(s) -

Ekardt W.,

Sheboul M. I.

Publication year - 1976

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.2220740212

Subject(s) - excited state , biexciton , exciton , atomic physics , molecule , photon , state (computer science) , physics , polariton , exchange interaction , chemistry , molecular physics , quantum mechanics , condensed matter physics , mathematics , algorithm , ferromagnetism

The first excited state of the excitonic molecule in CuCl is considered in the framework of the previously derived Bose formulation for the excitonic molecule. A resolution concerning the discrepancies between existing theoretical and experimental two‐photon absorption results is proposed: the first excited (rotational) state of the molecule consists of four irreducible sets: Γ 2 ⊕ Γ 3 ⊕ Γ 4 ⊕ Γ 5 , two of which (Γ 3 ⊕ Γ 5 ) are strongly two‐photon allowed, one is weakly allowed (Γ 4 ) and one is forbidden (Γ 2 ). The three sets Γ 3 ⊕ Γ 4 ⊕ Γ 5 should then be seen in luminescence from the biexciton states to single‐exciton or exciton‐polariton states. A study of the electron‐hole exchange interaction on these states is also made.

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