Premium
Mott Transition in CdS Revealed by Picosecond Nonlinear Absorption Measurements
Author(s) -
Egorov V. D.,
Nguyen Hoang Xuan,
Zimmermann R.,
Dneprovskii V. S.,
Kaschke M.,
Khechinashvili D. S.
Publication year - 1990
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.2221590146
Subject(s) - exciton , picosecond , mott transition , materials science , polarization (electrochemistry) , absorption spectroscopy , electron , molecular physics , atomic physics , condensed matter physics , optics , chemistry , physics , laser , superconductivity , hubbard model , quantum mechanics
Optical spectra above the Mott transition of excitons are calculated from the inhomogeneous integral equation for the polarization function including self‐energy, screening, and band filling. Taking CdS parameters and adjusted values of the electron‐hole temperature and density, good agreement is achieved with the results of transmission measurements made at room temperature on a thin CdS crystal using two‐beam excite‐and‐probe technique with 5 ps time resolution.