학술논문
Zeeman splitting of the conduction band of HgTe quantum wells with a semimetallic spectrum.
Document Type
Article
Source
Subject
*MERCURY telluride
*METALLIC bonds
*ZEEMAN effect
*CONDUCTION bands
*MAGNETIC fields
*ELECTRON density
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Language
ISSN
0021-3640
Abstract
Shubnikov-de Haas oscillations in HgCd Te/HgTe/HgCdTe structures with the widths of a well of 16 and 20 nm have been investigated in tilted magnetic fields. The spin-to-orbital splitting ratio in the conduction band has been found in a wide range of electron densities. The magnitude and density dependence of the ratio agree fairly well with the calculations of the spectrum in the 8-band kP model. It has been shown that the effective g factor is anisotropic, g < g . The anisotropy is very high at low densities but decreases rapidly with an increase in the density, approaching unity at n = (3−4) × 10 cm. [ABSTRACT FROM AUTHOR]