Abstract Effect of the electron-phonon interactions on the property of dynamical localization of semiconductor superlattices in a single-band model under the actions of the electric dc and acfield, respectively, are investigated. The results show that the electron-phonon interactions can destroy the dynamical localization of the electron. For the same phonon frequency, when the strength of the electron-phonon interactions becomes larger, the electron is more quickly scattered. When the phonon frequency equals to the Bloch frequency ΩB in dc field or Ωin ac field or one of them in dc-ac field, the electron initially localized at the 0th site can be rapidly scattered to the other sites, where Ω is the frequency of the ac field. The property of the dynamical localization of the electron is seriously destroyed by the photon-phonon resonant field.
Received: 02 August 2004
Revised: 16 December 2004
Accepted manuscript online:
PACS:
63.22.-m
(Phonons or vibrational states in low-dimensional structures and nanoscale materials)
Wang Zhi-Gang (王志刚), Duan Su-Qing (段素青), Zhao Xian-Geng (赵宪庚) Effect of electron-phonon interactions on dynamical localization of semiconductor superlattices 2005 Chinese Physics 14 1232
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
