Fano-like electron–phonon interference in δ-doping GaAs superlattices

✍ Scribed by Yu.A. Pusep; M.T.O. Silva; J.C. Galzerani; S.W. da Silva; L.M.R. Scolfaro; R. Enderlein; A.A. Quivy; A.P. Lima; J.R. Leite

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 64 KB
• Volume: 23
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1006/spmi.1996.0220

✦ Synopsis

The interaction between electron excitations and LO phonons is studied by Raman scattering in δ-doping GaAs superlattices. The Raman spectra measured close to the E 0 + 0 resonance of GaAs present Fano-like coupling of the LO phonons with the quasicontinuum single-particle electron excitations. Due to the self-consistent origin of the electron-energy spectrum in δ-doping superlattices the resonance of the Fano interference was found to be strongly dependent on the electron density as well as the excitation energy.