Effect of surface potential on the phase of an exciton wave
Kiselev V.A., Makarenko I.V., Razbirin B.S., Ural'tsev I.N.
The method developed by us [Phys. Stat. Sol. (b) 72, 161 (1975); Soviet Physics-Solid State 19, No. 8 (1977)] for the investigation of exciton interference spectra is used to study the phase of an exciton wave. A strong dependence of the phase on the wave vector is observed for the first time. This behavior of the phase is due to the influence of the surface potential.