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The Crossover Region of the Zeeman and the Rashba Effects in HgCdTe

Authors
Kim, Tae YuebJoo, SungjungLee, JinseoSuh, Jong HeeCho, ShinhangKim, Sun UngRhie, KungwonHong, JinkiShin, Kyung-Ho
Issue Date
Feb-2009
Publisher
KOREAN PHYSICAL SOC
Keywords
Rashba; Zeeman; Spin polarization; Non-magnetic semiconductor; g-factor; HgCdTe
Citation
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.54, no.2, pp 697 - 702
Pages
6
Indexed
SCIE
SCOPUS
KCI
Journal Title
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
Volume
54
Number
2
Start Page
697
End Page
702
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/120617
DOI
10.3938/jkps.54.697
ISSN
0374-4884
1976-8524
Abstract
From Shubnikov-de Haas oscillations of a two-dimensional electron gas of HgCdTe, the crossover region of the Zeeman and the Rashba effects has been found. This crossover region is attributed to the inherently large Rashba and Zeeman effects in this system. The experimental data have been successfully simulated by calculations based on a non-parabolic two-band k . p theory. Using the experimentally obtained parameters, we calculate the spin-splitting energy and the spin-expectation value and quantitatively compare the Rashba and the Zeeman effects. When the magnetic field is perpendicular to the sample plane, the spin-splitting, caused by the Rashba effect, is reduced by the development of the Landau level, thereby making the Zeeman effect a relatively more dominant mechanism in the crossover region.
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College of Science and Technology (Semiconductor Physics in Division of Display and Semiconductor Physics)
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