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Biexciton Wavefunction in Bulk CuCl Probed by Inverse Polariton Series
Author(s) -
Tokunaga E.,
Ivanov A.L.,
Nair S.V.,
Masumoto Y.
Publication year - 2000
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(200009)221:1<359::aid-pssb359>3.0.co;2-6
Subject(s) - wave function , series (stratigraphy) , polariton , excited state , exciton , physics , inverse , atomic physics , radiative transfer , molecule , biexciton , chemistry , quantum mechanics , condensed matter physics , mathematics , paleontology , geometry , biology
We report the observation of the radiative decay of excitonic molecules, selectively excited at the wavevector K m , into polaritons associated with the n = 1s, 2s, 3s, and 4s states of the optically allowed Z 3 exciton in bulk CuCl. The K m dependence of the emission series (inverse polariton series) is quantitatively explained by the bipolariton model, leading to unambiguous estimation of the relative contributions of the 2s, 3s, and 4s exciton states to the four‐particle molecule wavefunction, both in sign and in magnitude. The very structure of the molecule wavefunction is highly sensitive to the above relative contributions, and, in particular, we examine the Akimoto‐Hanamura and hydrogen‐molecule trial wavefunctions.