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Magneto-optical Faraday effect in II–VI based semimagnetic semiconductor nanocrystals

✍ Scribed by Andriy I. Savchuk; Volodymyr I. Fediv; Ihor D. Stolyarchuk; Tetyana A. Savchuk; Alessio Perrone

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
136 KB
Volume
3
Category
Article
ISSN
1862-6351

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✦ Synopsis

Abstract

Different physical and chemical methods were used to prepare II–VI based semimagnetic semiconductor nanocrystals. A study of magneto‐optical Faraday effect in the nanocrystals revealed its enhancement as compared with bulk crystals. It is explained in framework of increase in the oscillator strength of exciton transitions and to the difference between these strengths in an external magnetic field. It was observed almost linear dependence of the Faraday rotation as function of magnetic field strength for nanocrystals at liquid helium temperature in contrast to the dependence with saturation in bulk case and changes in process of a transition of the semimagnetic nanocrystals from the paramagnetic state to a spin glass state. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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