中国物理B ›› 2012, Vol. 21 ›› Issue (10): 107301-107301.doi: 10.1088/1674-1056/21/10/107301
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
马磊a b, 康广振a, 李俊a
Ma Lei (马磊)a b, Kang Guang-Zhen (康广振)a, Li Jun (李俊)a
摘要: We study the relation between renormalization of the chemical potential due to multiphonon effects at the surface of Be(0001) and doping by solving the strong-coupling self-consistent equations of a two-dimensional (2D) electron-phonon interaction system. We present the quasiparticle dispersions and inverse lifetimes of a 2D electron system interacting with Einstein phonons under the different dopings (corresponding to chemical potentials). We find that the effect of electron-phonon interaction on electron structure is strongest at the half filling, but it has no effect on the chemical potential. However, the chemical potential shows distinct renormalization effects away from half filling due to the electron-phonon interaction.
中图分类号: (Surface states, band structure, electron density of states)