Combined exciton-electron and trion-electron excitations in ZnSe/ZnMgSSe modulation-doped quantum wells

被引：0
|
作者：
Kochereshko, VP [1 ]
Astakhov, GV
Yakovlev, DR
Ossau, W
Faschinger, W
Landwehr, G
机构：
[1] Russian Acad Sci, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
[2] Univ Wurzburg, Inst Phys, D-97074 Wurzburg, Germany
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2002年 / 229卷 / 01期
关键词：
D O I：
10.1002/1521-3951(200201)229:1<543::AID-PSSB543>3.0.CO;2-O
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In modulation-doped ZnSe/(Zn,Mg)(S,Se) quantum well structures with electron concentration of about 10(11) cm(-2) a new resonant optical transition involving four particles (one hole and three electrons) was found in external magnetic fields in photoluminescence excitation and reflectivity spectra. This transition reveals as a narrow line between exciton and trion lines. It is identified with a combined process in which a photocreated exciton binds with an electron forming a trion and promotes for the second electron a transition to higher Landau levels.
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收藏
页码：543 / 547
页数：5
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