1. Faradėjaus efekto tyrimai siauratarpiuose puslaidininkiuose: optinė alternatyva Holo matavimams
- Author
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Clarke, Frederick Walter, Laurinavičius, Albertas, Bendorius, Rimgaudas Adolfas, Balevičius, Saulius, Vaičikauskas, Viktoras, Ašmontas, Steponas, Godlewski, Marek, Tamulevičius, Sigitas, Babonas, Gintautas Jurgis, and Vilnius Gediminas Technical University
- Subjects
Narrow gap semiconductors ,Physics ,Effective mass ,Efektinė masė ,Faradėjaus efektas ,Faraday rotation ,Siauratarpiai puslaidininkiai - Abstract
The main aim of this work was to develop a method of screening HgCdTe materials for carrier concentration and mobility using Faraday rotation θ and absorption α. Faraday rotation provides N/m*2, where N is the carrier concentration and m* is the effective mass. Since m* was not known in HgCdTe, a Faraday rotation spectrometer was developed to systematically measure it as a function of temperature and Cd mole fraction. Effective masses in n-InSb, and n-GaAs were measured and compared with known values in the literature to validate the method. Mobility is proportional to θ/α. The proportionalities were determined in HgCdTe, n-InSb, and n-GaAs at infrared wavelengths.
- Published
- 2006