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About an Increase of Exciton Binding Energy in Layered InSe
Author(s) -
Gnatenko Yu. P.,
Zhirko Yu. I.
Publication year - 1993
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.2221800113
Subject(s) - exciton , binding energy , biexciton , phonon , absorption (acoustics) , condensed matter physics , absorption spectroscopy , effective mass (spring–mass system) , reduced mass , materials science , molecular physics , chemistry , physics , atomic physics , quantum mechanics , optics
At T > 25 K an increase of the direct free exciton binding energy Δ E exc din the exciton absorption spectra of InSe is found. The calculations show that this phenomena may be attributed to an increase of the exciton reduced mass μ exc *due to exciton‐interlayer optical phonon interaction. The dynamical processes of exciton‐phonon intcraction with temperature in laycred InSc are discussed.