Magnetic absorption of hexagonal crystals CdSe in strong and weak fields: Quasi-cubic approximation

The spectra of ultrathin free samples of hexagonal CdSe in a magnetic field up to 8 T are studied at 1.7 K. The fan-shaped diagram contains information on weak (the Zeeman effect and diamagnetic shift), as well as strong fields (transitions between Landau levels). As a result of the application of two theoretical models for combined interpretation of strong- and weak-field experimental data, two sets of (band and polaron) parameters are calculated for hexagonal CdSe in the quasi-cubic approximation. The values of the obtained polaron/band parameters are: the electron effective mass m(e) = 0.125/0.116m(0), the Luttinger parameters gamma(1) = 1.5/1.72, gamma = 0.29/0.37, kappa = - 0.63, and the effective electron g-factor g(e) = 0.7. (C) 2000 MAIK "Nauka/Interperiodica".