electron electron interactions
electron electron scattering
Electron excitation energy
electron excitation of the nucleus
Electron excitation temperature
electron-electron interaction
electron-electron interacton
electron-electron scattering
excitation electron anomaly
localized electron states
multi-electron excitation
pi-electron (=π-electron)
strong electron-electron correlation
Surface electron states
two dimensional electric field and electron states
the structure of low-lying excitation states