Finite size effects on the optical transitions in quantum rings under a magnetic field |
| |
Authors: | T V Bandos A Cantarero A García-Cristóbal |
| |
Institution: | (1) Material Science Institute, Universitat de València, PO Box 22085, 46071 Valencia, Spain |
| |
Abstract: | We present a theoretical study of the energy spectrum of single electron and hole states in
quantum dots of annular geometry under a high magnetic field along the ring axis in the frame of
uncorrelated electron-hole theory. We predict the periodic disappearance of the optical emission of
the electron-hole pair as the magnetic field increases, as a consequence of the finite height of
the barriers. The model has been applied to semiconductor rings of various internal and external
radii, giving as limiting cases the disk and antidot. |
| |
Keywords: | 73 21 La Quantum dots 71 35 Ji Excitons in magnetic fields magnetoexcitons 73 23 Ra Persistent currents 78 67 Hc Quantum dots |
本文献已被 SpringerLink 等数据库收录! |