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 me=0.125/0.116m0, the Luttinger parameters γ1=1.5/1.72, γ=0.29/0.37, κ=−0.63, and the effective electron g-factor ge=0.7.