Electronic properties of semiconductor Fibonacci quasi-periodic superlattices

✍ Scribed by J. Arriaga; V.R. Velasco

• Book ID: 104341613
• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 233 KB
• Volume: 241
• Category: Article
• ISSN: 0378-4371
• DOI: 10.1016/s0378-4371(97)00110-6

✦ Synopsis

We study the lowest conduction band and the highest valence band states of Fibonacci superlattices, formed by different slabs of AlAs and GaAs grown along the (0 0 1) direction. We employ an empirical tight-binding Hamiltonian including spin-orbit coupling together with the surface Green's function matching method. Second to sixth generation superlattices with different generating layer thicknesses have been analyzed. A selective localization of the spectral strength in the thicker GaAs slab is found for both valence and conduction band states in all the cases studied here.