Electron scattering by surface vibration in a rectangular quantum wire

✍ Scribed by Norihiko Nishiguchi

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 177 KB
• Volume: 13
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/s1386-9477(01)00237-5

✦ Synopsis

We investigate electron scattering by acoustic phonons in rectangular quantum wires, paying special attention to the coherent interference between the deformation potential scattering and the ripple mechanism scattering due to wire-surface vibration. We show that the deformation potential and the ripple mechanism scatterings do not take place independently but always occur coherently, taking account of the normal phonon modes of the wire. The ripple mechanism raises the scattering rates in particular for thin wires composed of material having a small electron e ective mass. We show the signiÿcance of the ripple mechanism in electron scattering in quantum wires, by illustrating the electron scattering rates of square and rectangular GaAs and InAs wires.