2007/06/27 by Lu Ding, Chunlei Yang, Ding, Lu +13
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Semiconductor Quantum Structures and Devices #ZnO doping and properties #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.0706.3965
5 pages, 4 figures
arxiv created 2007/06/27 · openalex publication_date 2007/06/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We studied the circular polarization and angular dependences of the magneto-photoluminescence spectra of the free A-exciton 1S state in wurtzite ZnO at T = 5 K. The circular polarization properties of the spectra clearly indicate that the top valence band has Gamma7 symmetry. The out-of-plane component of the magnetic field, which is parallel to the sample's c axis, leads to linear Zeeman splitting of both the dipole-allowed Gamma5 exciton state and the weakly allowed Gamma1/Gamma2 exciton states. The in-plane field, which is perpendicular to the c axis, increases the oscillator strength of the weak Gamma1/Gamma2 states by forming a mixed exciton state.