Open AccessEFFECT OF PHONON-ELECTRON COUPLING ON THE SURFACE WAKE POTENTIAL
Author(s) -
Meng Xian,
YouNian Wang
Publication year - 1998
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.47.1155
Subject(s) - wake , coupling (piping) , surface phonon , specular reflection , oscillation (cell signaling) , semiconductor , electron , phonon , physics , condensed matter physics , dielectric , reflection (computer programming) , atomic physics , materials science , optics , mechanics , optoelectronics , quantum mechanics , biology , computer science , metallurgy , genetics , programming language
The wake potential and energy loss of a swift ion moving parallel to a heavily doped semiconductor surface in vacuum are studied with the specular-reflection model and the dielectric response theory. The phonon-electron coupling effect on the surface wake potential and the energy loss is investigated by using a frequency-dependent dielectric function. We find that there are two branches of phonon-electron coupling excitations which contribute to the wake potential and the energy loss. Numerical results show that the oscillation form of the wake potential is obviously influenced by the phonon-electron coupling effect.