Modification of exchange interaction parameters by wire width in Cd0.95Mn0.05Te/Cd0.90Mg0.10Te quantum wires

被引：13

作者：

Chen, ZH ^{[1
]}

Debnath, MC

Shibata, K

Saitou, T

Sato, T

Oka, Y

机构：

[1] Tohoku Univ, Sci Measurements Res Inst, Sendai, Miyagi 9808577, Japan

[2] Japan Sci & Technol Corp, CREST, Kawaguchi 3320012, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2001年 / 89卷 / 11期

关键词：

D O I：

10.1063/1.1357143

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magneto-photoluminescence from mesa-shaped Cd0.95Mn0.05Te/Cd0.90Mg0.10Te quantum wires were studied. The Zeeman shift of the excitonic photoluminescence from the quantum wires in a magnetic field is significantly decreased, compared to that from quantum wells. This decrease results from the possible reduction of the exchange interaction of electrons and holes with Mn ions in low dimensional structures. In the excitonic photoluminescence of the quantum wires with the width of 50-100 nm, the transient relaxation of the luminescence peak energy due to the excitonic magnetic polaron formation is remarkably less than that in the quantum well. This result shows the suppressed excitonic magnetic polaron effect in the narrower quantum wires. (C) 2001 American Institute of Physics.

引用

页码：6701 / 6703

页数：3

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