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题名: Electronic structure of Mn-doped ZnO quantum wires: A mean-field theory study
作者: Zhu YH;  Xia JB
发表日期: 2007
摘要: Based on the effective-mass model and the mean-field approximation, we investigate the energy levels of the electron and hole states of the Mn-doped ZnO quantum wires (x=0.0018) in the presence of the external magnetic field. It is found that either twofold degenerated electron or fourfold degenerated hole states split in the field. The splitting energy is about 100 times larger than those of undoped cases. There is a dark exciton effect when the radius R is smaller than 16.6 nm, and it is independent of the effective doped Mn concentration. The lowest state transitions split into six Zeeman components in the magnetic field, four sigma(+/-) and two pi polarized Zeeman components, their splittings depend on the Mn-doped concentration, and the order of pi and sigma(+/-) polarized Zeeman components is reversed for thin quantum wires (R < 2.3 nm) due to the quantum confinement effect.
KOS主题词: Magnetic semiconductors
刊名: PHYSICAL REVIEW B
专题: 中国科学院半导体研究所(2009年前)_期刊论文

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推荐引用方式:
Zhu, YH (Zhu, Yuan-Hui); Xia, JB (Xia, Jian-Bai) .Electronic structure of Mn-doped ZnO quantum wires: A mean-field theory study ,PHYSICAL REVIEW B,MAY 2007,75 (20):Art.No.205113
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