Optical detection of anisotropic g-factor and nuclear spin polarization in a single CdTe quantum well. (10th February 2015)

• Record Type: Journal Article
• Authors: Yan, Li-Ping; Kurosawa, Masahiro; Hsu, Wei-Ting; Chang, Wen-Hao; Adachi, Satoru
• Is Part Of: Japanese journal of applied physics. Volume 54:Number 3(2015:Mar.)
• Publication Date: 2015-02-10
• Subjects: Physics -- Periodicals; 621.05
• DOI: 10.7567/JJAP.54.033003
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: Longitudinal and in-plane electron g -factors, and a nuclear spin polarization (NSP) have been evaluated precisely in a CdTe/Cd0.85 Mg0.15 Te single quantum well by using the time-resolved Kerr rotation and double lock-in detection techniques. Resident electron spin polarization (RESP) was formed via the negative trion formation and recombination, and RESP gave rise to NSP in an oblique magnetic field configuration. We observed the effective nuclear field of a few mT which was weak compared with that in III–V semiconductor nanostructures as expected, but the nuclear field can be converted to the maximal NSP of 12% in Faraday geometry.