Bulk-like transverse electron mobility in an array of heavily n-doped InP nanowires probed by terahertz spectroscopy

Summary, in English

Terahertz spectroscopy is employed for the noncontact measurement of transversal mobility in InP nanowires, wherein photonic effects (waveguiding of excitation beam and propagation of terahertz beam in a complex gradient environment) were successfully deconvoluted. Monte Carlo calculations accounting for electron localization and heavy doping were used to determine electron momentum relaxation time corresponding to electron mobility >= 3000 cm(2)/Vs, which is similar to that in bulk InP. The developed approach paves a way for noncontact determination of charge mobility in advanced semiconductor nanostructures.

• Author: Carlito Ponseca; H. Nemec; Jesper Wallentin; Nicklas Anttu; Jason Beech; Azhar Iqbal; Magnus Borgström; Mats-Erik Pistol; Lars Samuelson; Arkady Yartsev
• Department/s: Chemical Physics; Solid State Physics; NanoLund: Centre for Nanoscience
• Publishing year: 2014
• Language: English
• Publication/Series: Physical Review B (Condensed Matter and Materials Physics)
• Volume: 90
• Issue: 8
• Links: http://dx.doi.org/10.1103/PhysRevB.90.085405
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Atom and Molecular Physics and Optics; Condensed Matter Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 1098-0121